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

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Our top choices for Kosai hotels

1. Hotel Route Inn Hamanako

Hotel Route Inn Hamanako
3.0 star property
Kosai
8.0 out of 10, Very good, (202 reviews)
"Quite place & clean ,Parking is wide"
Japan
RESTITUTA BULFA
The price is AU$114
21 Aug - 22 Aug
Hotel Route Inn Hamanako

2. Tabist Kosai Hamanako no Yado

Tabist Kosai Hamanako no Yado
2.0 star property
Kosai
7.0 out of 10, Good, (49 reviews)
"Wonderful hotel. Very quiet. Our room was huge!"
United States
Sigrid
The price is AU$44
31 July - 1 Aug
Tabist Kosai Hamanako no Yado

3. Grand Mercure Lake Hamana Resort & Spa

Grand Mercure Lake Hamana Resort & Spa
4.0 star property
Nishi Ward
8.0 out of 10, Very good, (667 reviews)
"Great breakfast, really nice onsen. "
United Kingdom
Katarina
The price is AU$100
22 July - 23 July
Grand Mercure Lake Hamana Resort & Spa

4. Minshuku Takahashi Kashibuneten

Minshuku Takahashi Kashibuneten
2.5 star property
Nishi Ward
9.6 out of 10, Exceptional, (59 reviews)
"The view and the owner is very helpful and kind"
United States
Yoong
The price is AU$85
21 Aug - 22 Aug
Minshuku Takahashi Kashibuneten

5. Hotel Route Inn Hamamatsunishi Inter

Hotel Route Inn Hamamatsunishi Inter
3.0 star property
Nishi Ward
8.4 out of 10, Very good, (246 reviews)
"Facility is clean"
Japan
Takatsugu
The price is AU$113
26 July - 27 July
Hotel Route Inn Hamamatsunishi Inter

6. Kuretake Inn Hamamatsu Nishi Inter

Kuretake Inn Hamamatsu Nishi Inter
3.0 star property
Naka Ward
8.0 out of 10, Very good, (166 reviews)
"ćƒÆćƒ³ćƒ‰ćƒŖćƒ³ć‚Æć‚µćƒ¼ćƒ“ć‚¹ćŒč‰Æć„ć§ć™ć€‚"
Japan
Mami
The price is AU$93
21 Aug - 22 Aug
Kuretake Inn Hamamatsu Nishi Inter

7. Hotel Associa Toyohashi

Hotel Associa Toyohashi
4.0 star property
Toyohashi
9.0 out of 10, Wonderful, (1,002 reviews)
"Great location, at the train station, close to shops and tram. Would definitely stay again"
Australia
Bradley
The price is AU$92
3 Aug - 4 Aug
Hotel Associa Toyohashi

8. Hamamatsu Marriott Hotel

Hamamatsu Marriott Hotel
5.0 star property
Naka Ward
8.0 out of 10, Very good, (5 reviews)
"Staff was amazing. Gorgeous faculty. Large, well appointed rooms. Will definitely recommend to friends"
United States
Linda
The price is AU$138
30 July - 31 July
Hamamatsu Marriott Hotel

9. Wan Wan Paradise Hamanako

Wan Wan Paradise Hamanako
3.0 star property
Nishi Ward
8.8 out of 10, Excellent, (63 reviews)
"Very nice onsen hotel and dog friendly. Japanese style room but has beds and comfortable chairs, spacious rooms with seperated shower, toilet and sink rooms. It is very clean and no smell at all (we dont have dog for the stay there). We booked the half board and the 10-course dinner and elegent breakfast were excellent. There is a city bus stop in front the hotel and it directly connects to Hamamatsu station. The onsite onsen is great. It is two bus stops from the beatiful flower park. Highly...
United States
yongwei
The price is AU$130
22 July - 23 July
Wan Wan Paradise Hamanako

10. Just Inn Premium Toyohashi Station Shinkansen Guchi

Just Inn Premium Toyohashi Station Shinkansen Guchi
3.0 star property
Toyohashi
9.0 out of 10, Wonderful, (109 reviews)
"good"
Japan
umi
The price is AU$80
26 July - 27 July
Just Inn Premium Toyohashi Station Shinkansen Guchi

11. Hotel Listel Hamanako

Hotel Listel Hamanako
3.0 star property
Kita Ward
6.0 out of 10, (19 reviews)
"ę™šäøŠę‰åˆ°é”é…’åŗ—é™„čæ‘č»Šē«™ļ¼Œä½†å¤©é»‘é—œäæ‚åŖå„½ļ¼Œč‡“é›»é€šēŸ„é…’åŗ—å¾ŒéšØå³é§•č»Šå‰ä¾†ęŽ„é€åˆ°é…’åŗ—"
Hong Kong SAR China
Evan
The price is AU$150
3 Aug - 4 Aug
Hotel Listel Hamanako

12. Hotel Arc Riche Toyohashi

Hotel Arc Riche Toyohashi
4.0 star property
Toyohashi
9.4 out of 10, Exceptional, (228 reviews)
"I recommend this Property nice place to stay"
Canada
rogelio
The price is AU$99
2 Aug - 3 Aug
Hotel Arc Riche Toyohashi

13. Comfort Hotel Toyohashi

Comfort Hotel Toyohashi
3.0 star property
Toyohashi
8.8 out of 10, Excellent, (242 reviews)
"Room spacious & comfortable. Spotless presentation. Staff accommodating & helpful. Have stayed here before & would definitely come again. Visiting family in the area. Breakfast adequate - limited for vegetarians; still able to find enough to satisfy. "
Australia
Jeanette
The price is AU$76
2 Aug - 3 Aug
Comfort Hotel Toyohashi

14. Comfort Hotel Toyokawa

Comfort Hotel Toyokawa
3.0 star property
Toyokawa
8.6 out of 10, Excellent, (132 reviews)
"Simple but reliable and good hotel for a fair price. "
United States
Henry
The price is AU$73
2 Aug - 3 Aug
Comfort Hotel Toyokawa

15. Hotel Route Inn Toyohashi Ekimae

Hotel Route Inn Toyohashi Ekimae
3.0 star property
Toyohashi
9.0 out of 10, Wonderful, (467 reviews)
"Super easy and comfortable stay. Will stay there again."
United States
Ken
The price is AU$95
26 July - 27 July
Hotel Route Inn Toyohashi Ekimae

16. Daiwa Roynet Hotel Hamamatsu

Daiwa Roynet Hotel Hamamatsu
3.0 star property
Naka Ward
8.8 out of 10, Excellent, (977 reviews)
"Staff was welcoming and the on site Family Mart was convenient! "
Canada
Lauren
The price is AU$99
2 Aug - 3 Aug
Daiwa Roynet Hotel Hamamatsu

17. Richmond Hotel Hamamatsu

Richmond Hotel Hamamatsu
3.0 star property
Naka Ward
8.8 out of 10, Excellent, (668 reviews)
"Good location. Enjoyed our stay."
United States
Lawrence
The price is AU$73
2 Aug - 3 Aug
Richmond Hotel Hamamatsu

18. Toyoko Inn Hamamatsu-eki Minami-guchi

Toyoko Inn Hamamatsu-eki Minami-guchi
3.0 star property
Naka Ward
8.8 out of 10, Excellent, (11 reviews)
"ćØć«ć‹ćć‚¹ć‚æćƒƒćƒ•ć®ę–¹ć®åÆ¾åæœćŒč‰Æćć€ę°—ęŒć”ć‚ˆćéŽć”ć›ć¾ć—ćŸć€‚"
Japan
Takako
The price is AU$90
22 July - 23 July
Toyoko Inn Hamamatsu-eki Minami-guchi

19. Dormy Inn EXPRESS Toyohashi Hot Spring

Dormy Inn EXPRESS Toyohashi Hot Spring
3.0 star property
Toyohashi
9.0 out of 10, Wonderful, (198 reviews)
"Nice size room and friendly staff!"
United States
Matthew
The price is AU$81
4 Aug - 5 Aug
Dormy Inn EXPRESS Toyohashi Hot Spring

20. Okura Act City Hotel Hamamatsu

Okura Act City Hotel Hamamatsu
4.5 star property
Naka Ward
9.0 out of 10, Wonderful, (1,000 reviews)
"Very good staff and good location "
United States
Isao
The price is AU$181
2 Aug - 3 Aug
Okura Act City Hotel Hamamatsu
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
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Stay near popular Kosai attractions

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.

A coastal city with a marina, buildings, and a forested hill.

Top Kosai Hotel Reviews

Recent Reviews in Kosai

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Frequently asked questions

What's the best place for a stay in Kosai?
Based on our traveller data, Tabist Kosai Hamanako no Yado is one of the top choices for your stay. This guest house is a short 1-minute walk from Lake Hamana, and it offers free parking and free WiFi. Hotel Route Inn Hamanako is another good option for your stay. See all available top hotels, or vacation rentals in Kosai.
What are some of the best holiday rentals that Kosai has to offer?
CORRUGATED HOUSE - CORRUGATED HOUSE / Toyohashi Aichi: This holiday home rental outside of Kosai has air conditioning and WiFi to help you feel perfectly comfortable in your new surroundings. Kitchen amenities include a fridge, a stovetop and kitchenware. See all vacation rentals in Kosai.
If I need to cancel my hotel reservation in Kosai, will I receive a refund?
Yes! The majority of hotel room reservations are fully refundable provided that you cancel prior to the hotel's cancellation deadline, which is often 24 or 48 hours before your arrival date. If you booked a non-refundable reservation, you may still be able to cancel and be given a refund within 24 hours of booking. Filter your search by fully refundable to find flexible hotel deals in Kosai.
What are some accommodation options with pools in Kosai?
Grand Mercure Lake Hamana Resort & Spa: Hotel, 1-minute walk from Lake Hamana. Features a children's pool, a seasonal outdoor pool and spa services. View all hotels with pools in Kosai.
What's it like staying in Kosai?
Visitors can enjoy all that Kosai has to offer, including its beaches. In Kosai, there are 8 hotels and other accommodation options to choose from. Find out more about Kosai.
What should I see while I'm in Kosai?
Natural beauty is on display at Lake Hamana, Arai Beach and Arai Benten Beach. Additionally, you might want to add Sakichi Toyoda Memorial House to your itinerary. Take a look at what more there is to see and do in Expedia's Kosai guide.
What's the seasonal weather like in Kosai?
The hottest months are usually August and July, with an average temperature of 25°C, while the coldest months are January and February, with an average of 8°C. The rainiest months in Kosai are July, June, September and October, with each month seeing an average of 293 mm of rainfall.