Kosai Hotel & Accommodation Deals 2026 from AU$43 - Compare prices by date

A stone lantern, a pine tree, and a coastal view.

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Our top choices for Kosai hotels

A buffet line with various food items and condiments.

A hotel lobby with seating areas, a reception desk, and a coffee machine.

Vending machines with various beverages and snacks.

A multi-story hotel with a green roof and numerous windows.

1. Hotel Route Inn Hamanako

Kosai

RESTITUTA BULFA

AU$113

19 Nov - 20 Nov

A balcony with wicker chairs and a table, overlooking a body of water and greenery.

A sunroom with a view of a lush landscape, furnished with wicker chairs and a glass table.

A tatami mat room with a futon, a table, chairs, a television, and a cabinet.

A room with a television, a desk with a kettle, a chair, and a window with curtains.

2. Tabist Kosai Hamanako no Yado

Kosai

Sigrid

AU$43

26 Oct - 27 Oct

A traditional Japanese-style room with tatami flooring, a woven rattan ottoman, and a view of a cityscape through large windows.

A restaurant with large windows offering a view of a sunset over a body of water.

A dining area with wicker furniture and a table set for two, overlooking a body of water and mountains.

A reception desk with a sign reading "LE SENSORIEL" and a potted plant in the foreground.

3. Grand Mercure Lake Hamana Resort & Spa

Nishi Ward

Katarina

AU$80

22 Oct - 23 Oct

A spacious lobby with a reception desk, a seating area, and a decorative plant centerpiece.

A modern hotel with a prominent white facade, multiple floors, and a rooftop terrace.

A modern kitchen with chefs preparing food, stainless steel cooking stations, and a decorative wall with a leaf pattern.

A hotel hallway with doors on both sides, carpeted floor, and recessed lighting.

4. Hotel Associa Toyohashi

Toyohashi

Jeanette

AU$112

25 Oct - 26 Oct

A marina with several boats docked, a pier extending into the water, and a distant mountain range.

A long dining table with various dishes and a central pot, surrounded by tatami mats.

A sunset over a calm body of water with a dock and boats.

A cluttered storage area with various items, including boxes and debris, in a residential setting.

5. Minshuku Takahashi Kashibuneten

Nishi Ward

Yoong

AU$90

15 Nov - 16 Nov

A desk with a desk lamp, a telephone, and a power adapter.

A multi-story hotel building with a sign for 'TOYOTA INN' at the top.

A classroom with desks, chairs, a clock, a TV, and a vending machine.

A hotel room with a bed, a desk with a chair, a small refrigerator, an air conditioning unit, a wall-mounted TV, and a door with a handle.

6. Toyoko Inn Hamamatsu-eki Minami-guchi

Naka Ward

Kenichi

AU$78

8 Nov - 9 Nov

The exterior of the Centurion Hotel with a clear view of the entrance, including the name and address.

A hotel room with two beds, a bedside table, a phone, and a wall-mounted picture.

A long, narrow hotel corridor with wooden doors on both sides and a carpeted floor.

A buffet with various dishes including seafood, salads, and noodles.

7. Centurion Hotel Hamamatsu

Naka Ward

Vwerosuo

AU$48

15 Nov - 16 Nov

A modern breakfast buffet with various food items and a chef preparing food.

A hotel lobby with three elevator doors, a reception desk, and a wall-mounted sign.

A spacious lobby with a central escalator, multiple seating areas, and digital information displays.

8. Hotel Concorde Hamamatsu

Naka Ward

HIDEYUKI

AU$76

16 Nov - 17 Nov

A library cafe with wooden tables and chairs, bookshelves, and a coffee bar.

A modern library with wooden tables and chairs, bookshelves, and hanging light fixtures.

A modern hallway with a large wall mural, carpeted flooring, and recessed lighting.

A laundry facility with multiple washing machines and dryers, including a CO/N washer and a 45kg dryer.

9. Comfort Hotel Hamamatsu

Naka Ward

George W

AU$75

29 Oct - 30 Oct

A buffet with various food options including meats, fruits, and vegetables.

A hotel room with two beds, a desk, a chair, a telephone, and a wall-mounted light fixture.

A hotel reception area with a modern design, featuring a reception desk, a digital check-in kiosk, and a large screen displaying the hotel's interior.

A multi-story hotel with a prominent APA sign on the top.

10. APA Hotel Hamamatsueki Minami

Naka Ward

John

AU$73

15 Nov - 16 Nov

A traditional Japanese tea house with tatami mats, wooden furniture, and a display of sake bottles.

A modern hotel room with a sofa, armchair, round table, large window, and a flat-screen TV.

A hotel room with a large bed, a TV, a balcony with a table and chairs, and a view of the city.

A modern hotel room with a large bed, a desk, and a view of the city.

11. Hamamatsu Marriott Hotel

Naka Ward

Linda

AU$132

20 Oct - 21 Oct

A high-rise room with a city view, large windows, a sofa, and a table with a lamp.

A spacious lobby with a central reception desk, a large bookshelf filled with books, and a modern chandelier.

A high-rise room with a city view, featuring a sofa, armchairs, and a coffee table.

A restaurant with tables set for dining, a chandelier, and a city view through large windows.

12. Hotel Arc Riche Toyohashi

Toyohashi

rogelio

AU$128

19 Nov - 20 Nov

A hotel room with two beds, a desk, a TV, and a small table.

A modern interior with a curved staircase, a carpeted floor, and a tiled wall.

A reception desk with a nameplate reading "Richmond" and a person in a business suit shaking hands with another individual.

13. Richmond Hotel Hamamatsu

Naka Ward

Lawrence

AU$88

15 Nov - 16 Nov

A hotel named Hotel Sorriso with a modern architectural design, featuring a prominent sign and reflective glass windows.

A hotel corridor with coin laundry machines, a wooden door, and a plant.

A wide, sandy beach with gentle waves in the background.

A modern hotel lobby with a reception desk, seating area, and a large window providing natural light.

14. Hotel Sorriso Hamamatsu

Naka Ward

david

AU$97

8 Nov - 9 Nov

A hotel with a modern facade, large windows, and a prominent entrance with a covered area.

A hotel room with two beds, a television, and a large window with curtains.

A traditional Japanese-style lobby with tatami mat flooring, wooden beams, and a reception desk.

A white church with a cross on the front, surrounded by a garden with potted plants and a white gazebo.

15. Loisir Hotel Toyohashi

Toyohashi

INKEOL

AU$115

3 Nov - 4 Nov

A building entrance with a tiled facade, a bench outside, and a glass door with signage.

A row of vending machines with various beverages and snacks, a water dispenser, and a microwave.

A hotel room with two beds, a large window with curtains, a wall-mounted light, and a small desk.

A compact white refrigerator in a corner of a room with a patterned carpet.

16. Toyoko Inn Hamamatsu Station

Naka Ward

Aruna

AU$78

15 Nov - 16 Nov

A modern reception area with a dark tiled wall and a glass counter.

A modern bathroom with a sink, toilet, and bathtub.

A hotel room with two beds, a desk, a chair, a small table, and a window with curtains.

17. Daiwa Roynet Hotel Hamamatsu

Naka Ward

Lauren

AU$111

1 Nov - 2 Nov

A hotel lobby with a reception desk, glass doors, and a staircase.

A modern building with a curved facade, large windows, and a staircase leading to an upper level.

A modern hotel room with a large bed, a desk, a chair, and a small ottoman.

18. Crowne Plaza - ANA Hamamatsu by IHG

Naka Ward

Raysir

AU$106

2 Nov - 3 Nov

A spacious cafe with a long counter, multiple seating areas, and a bright interior.

A bookshelf with various books and a decorative vase.

A hotel room with a wooden desk, a chair, a television, a telephone, and a waste bin.

19. Comfort Hotel Toyokawa

Toyokawa

Henry

AU$78

15 Nov - 16 Nov

A hot spring area with a stone floor, wooden rocks, and a view of a wooden fence through a window.

A modern kitchen with wooden cabinetry, stainless steel appliances, and a buffet area with various food items.

A modern lobby with a reception desk, a patterned wall, and an elevator.

A traditional Japanese interior with a wooden door, a wooden floor, and a sign with Japanese characters.

20. Dormy Inn EXPRESS Toyohashi Hot Spring

Toyohashi

Matthew

AU$100

25 Oct - 26 Oct

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Hotels recommended for families in Kosai

Hotel Route Inn Hamanako

Kosai

AU$113

19 Nov - 20 Nov

Grand Mercure Lake Hamana Resort & Spa

Nishi Ward

AU$80

22 Oct - 23 Oct

Minshuku Takahashi Kashibuneten

Nishi Ward

AU$90

15 Nov - 16 Nov

Hotel Associa Toyohashi

Toyohashi

AU$112

25 Oct - 26 Oct

Hotel Concorde Hamamatsu

Naka Ward

AU$76

16 Nov - 17 Nov

Hotel Sorriso Hamamatsu

Naka Ward

AU$97

8 Nov - 9 Nov

APA Hotel Hamamatsueki Minami

Naka Ward

AU$77

26 Oct - 27 Oct

A hotel entrance with a black doormat, a potted plant, and a wall with a numeric keypad.

A reception area with a counter, seating, and plants.

A hotel entrance with a glass door, a reception desk, and a poster advertising Hotel LIVEMAX.

A hotel room with two beds, a bedside table, a nightstand, and a wall-mounted light fixture.

HOTEL LiVEMAX Hamamatsu-Ekimae

Naka Ward

AU$88

15 Nov - 16 Nov

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Stay near popular Kosai attractions

Arai Benten Beach

7.0/10 (2 reviews)

Why not spend a care-free afternoon at Arai Benten Beach during your travels in Kosai?

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Arai Beach

7.0/10 (2 reviews)

Why not spend a care-free afternoon at Arai Beach during your travels in Kosai?

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Honkoji Temple

After visiting Honkoji Temple, make a plan to see the other sights and activities in Kosai. Experience the area's festivals and musical theatre.

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Sakichi Toyoda Memorial House

6.0/10 (2 reviews)

You can learn about the history of Kosai with a visit to Sakichi Toyoda Memorial House. Stroll along the lakeside or discover the area's desert landscape.

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Ogaji Temple

6.0/10 (2 reviews)

After visiting Ogaji Temple, make a plan to see the other sights and activities in Kosai. Amble around the area's lakeside or experience its festivals.

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Myoryuji Temple

After visiting Myoryuji Temple, make a plan to see the other sights and activities in Kosai. Take in the festivals and desert landscape in the area.

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Road Station Shiomisaka

Road Station Shiomisaka is just one of the places to see in Kosai, so why not enjoy the other things to explore during your travels? While you're in the area, wander around the natural setting.

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Learn more about Kosai

Between the golden shores of Arai Benten Beach and the tranquil waters of Lake Hamana, visitors find perfect spots for swimming and watersports. Explore the historic Sakichi Toyoda Memorial House before visiting ancient Ogaji Temple where locals still come to pray beneath centuries-old trees.

See all hotels in Kosai

A traditional Japanese gate with a tiled roof and a sign with Japanese characters.

Top Kosai Hotel Reviews

Recent Reviews in Kosai

HOTEL SUI HAMAMATSU

10/10 Excellent

"We had a lovely stay. The room was spacious and comfortable, the breakfast was delicious and the staff were absolutely beautiful — so friendly and welcoming. We really enjoyed our time here and would happily stay again."

Crowne Plaza - ANA Hamamatsu by IHG

10/10 Excellent

"This hotel has a perfect location, just a block from the train station in central Hamamatsu. It is clean, comfortable and very pleasant. With several restaurants, a nice bar and small cafe it has everything you need. We thoroughly enjoyed our stay."

Grand Mercure Lake Hamana Resort & Spa

10/10 Excellent

"Good value for money with an excellent onsen. Rooms are a good size and comfortable. The dinner and breakfast buffet is good value and excellent. Front desk staff speak English. Hotel is near Lake Hamana and is quite far from central Hamamatsu. Not many restaurants or cafes within walking distance. Car or taxi is required for exploring the area."

Okura Act City Hotel Hamamatsu

10/10 Excellent

"Another great Hotel in Japan I love it"

Dormy Inn EXPRESS Toyohashi Hot Spring

10/10 Excellent

"If you are staying in Toyohashi, this motel is great. The rooms were a nice size and clean. The only issue I had was with the pillows...so hard. Breakfast was great! Staff was amazing!"

EN HOTEL Hamamatsu

8/10 Good

"Overall the stay was great. I just wish there were more power outlets in the room. The one by the door was too loose and couldn't be used properly. There was one power strip on the wall but that was it The one thing we didn't like was the smoking room in one corner of the main lobby. Even though it has a door isolating it, the smell of cigarette was still strong around the lobby and reception area."

More cheap accommodation in Kosai

Tabist Kosai Hamanako no Yado

1253-1 Ochiba Kosai Shizuoka

AU$43

26 Oct - 27 Oct

7/10 Good! (52 reviews)

Hotel South Garden Hamamatsu

325-30 Sunayamacho Hamamatsu Shizuoka

AU$59

26 Oct - 27 Oct

7.6/10 Good! (52 reviews)

365BASE outdoor hostel

2-1-25 Hikuma, Naka-ku Hamamatsu Shizuoka-ken

AU$65

20 Oct - 21 Oct

8.2/10 Very good! (42 reviews)

AB Hotel Iwata

1-5-1 Nakaizumi, Iwata-shi Iwata Shizuoka Prefecture

AU$69

15 Nov - 16 Nov

10/10 Exceptional! (2 reviews)

Castle Inn Toyokawa

14-1 Shimonagayamacho Toyokawa Aichi Prefecture

AU$76

8 Nov - 9 Nov

Minshuku Takahashi Kashibuneten

3283-20 Bentenjima, Maisakacho, Nishi-ku Hamamatsu Shizuoka

AU$90

15 Nov - 16 Nov

9.6/10 Exceptional! (61 reviews)

Frequently asked questions

What is the best area to stay in Kosai?

The best area to stay in Kosai is around Washizu Station, which serves as a convenient base for exploring the city and its surroundings.This area offers straightforward access to public transport, with the station being the central point. You'll find a selection of local eateries and essential shops within a short walk, providing everyday conveniences. The vicinity to Lake Hamana also means pleasant views and easy access to lakeside activities.For couples looking for a relaxed getaway, staying near Washizu Station is ideal. You're well-placed to enjoy strolls along the lakefront or visit the nearby Washizu Hachiman Shrine, a peaceful and historic site. The ease of getting around from here allows for an unhurried exploration of the area.Families will also find Washizu Station area practical. Its transport links make day trips to attractions like the Hamamatsu Flower Park or the Hamanako Garden Park straightforward, without needing to navigate busy city centres.

What are the best budget hotels in Kosai?

For budget-friendly accommodation in Kosai, consider the Hotel Route Inn Hamanako.The 3-star Hotel Route Inn Hamanako, with an 8.0 rating, offers excellent value. Guests can expect complimentary WiFi, free toiletries, and convenient free parking for cars, RVs, buses, and trucks, including an electric car charging station. It is located just 0.5 km from Honkoji Temple and 5.4 km from Lake Hamana.

What are the best hotels in Kosai near Lake Hamana?

For hotels in Kosai near Lake Hamana, the Hotel Route Inn Hamanako is an excellent option.The 3-star Hotel Route Inn Hamanako, with an 8.0 rating, is conveniently located just 5.4 kilometres from Lake Hamana. Guests appreciate the complimentary WiFi and the free parking, which includes spaces for RVs, buses, and trucks, as well as an electric car charging station. It also offers free toiletries for added convenience.

When is the best time to go to Kosai?

The best time to go to Kosai is during spring (March to May) or autumn (September to November) for pleasant weather and minimal rainfall.Spring in Kosai offers mild temperatures, typically ranging from 10°C to 20°C, making it comfortable for exploring. This season is particularly well-suited for those who appreciate natural beauty, as the area's cherry blossoms (sakura) are in full bloom, especially around the Hamana Lake area. It's an excellent time for couples looking for scenic walks and enjoying the picturesque landscapes.Autumn also provides agreeable conditions, with temperatures usually between 15°C and 25°C. The humidity is lower, and the vibrant colours of the autumn foliage, particularly around the mountains surrounding Hamana Lake, are a significant draw.

Can I cancel my hotel reservation on Expedia?

You can cancel your hotel reservation on Expedia, though it depends on the cancellation policy of your booking. Most bookings are refundable if cancelled within 24-48 hours of the scheduled arrival. Be sure to check your booking confirmation for the exact cancellation policy. If free cancellation is available, you can cancel directly through your Expedia account by logging in, going to "My Trips", and selecting your reservation. To find flexible deals, filter your search by "Fully refundable property" for hotels in Kosai.

How can I save on a hotel booking in Kosai with Expedia?

One Key™—Expedia's free travel rewards program—gives you instant access to discounts with Member Prices on Kosai hotels. Plus, you'll earn OneKeyCash™* on eligible bookings to use on future trips. Booking an Expedia hotel and flight package is another great way to save, where bundling can result in significant savings. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

How much is the nightly rate for a hotel in Kosai?

Prices for hotels in Kosai often vary, but you can find a great deal from AU$43 on Expedia. All sorts of factors affect price, such as the time of year or the days of the week you choose for your stay. Find the best deals by being flexible with your dates, and sort search results by "Price: low to high" for our cheapest rates.

Explore a world of travel with Expedia

Book Hotels in Kosai on Expedia.co.jp

Search Kosai hotels

Change your mind

Treat yourself

Be picky

Go beyond your typical stay in Kosai

Check prices for these dates

Filter by

Property class

Guest rating

Our top choices for Kosai hotels

1. Hotel Route Inn Hamanako

2. Tabist Kosai Hamanako no Yado

3. Grand Mercure Lake Hamana Resort & Spa

4. Hotel Associa Toyohashi

5. Minshuku Takahashi Kashibuneten

6. Toyoko Inn Hamamatsu-eki Minami-guchi

7. Centurion Hotel Hamamatsu

8. Hotel Concorde Hamamatsu

9. Comfort Hotel Hamamatsu

10. APA Hotel Hamamatsueki Minami

11. Hamamatsu Marriott Hotel

12. Hotel Arc Riche Toyohashi

13. Richmond Hotel Hamamatsu

14. Hotel Sorriso Hamamatsu

15. Loisir Hotel Toyohashi

16. Toyoko Inn Hamamatsu Station

17. Daiwa Roynet Hotel Hamamatsu

18. Crowne Plaza - ANA Hamamatsu by IHG

19. Comfort Hotel Toyokawa

20. Dormy Inn EXPRESS Toyohashi Hot Spring

Hotels recommended for families in Kosai

Hotel Route Inn Hamanako

Grand Mercure Lake Hamana Resort & Spa

Minshuku Takahashi Kashibuneten

Hotel Associa Toyohashi

Hotel Concorde Hamamatsu

Hotel Sorriso Hamamatsu

APA Hotel Hamamatsueki Minami

HOTEL LiVEMAX Hamamatsu-Ekimae

Stay near popular Kosai attractions

Arai Benten Beach

Arai Beach

Honkoji Temple

Sakichi Toyoda Memorial House

Ogaji Temple

Myoryuji Temple

Road Station Shiomisaka

Learn more about Kosai

Top Kosai Hotel Reviews

Recent Reviews in Kosai

HOTEL SUI HAMAMATSU

Crowne Plaza - ANA Hamamatsu by IHG

Grand Mercure Lake Hamana Resort & Spa

Okura Act City Hotel Hamamatsu

Dormy Inn EXPRESS Toyohashi Hot Spring

EN HOTEL Hamamatsu

More cheap accommodation in Kosai

Tabist Kosai Hamanako no Yado

Hotel South Garden Hamamatsu

365BASE outdoor hostel

AB Hotel Iwata

Castle Inn Toyokawa

Minshuku Takahashi Kashibuneten

Frequently asked questions

Explore a world of travel with Expedia

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