Guesthouse staff is nice, you can cook and eat in the lounge or the lovely terrace outside. I was there for only 1 night so it does the job, wifi works well and very close to the beach. Also a food store (Lawson) 3 min walk from the hotel, by the beach. Hotel has many Japan & Kamakura guides we can borrow.
The downside for me was the access to the rooms: mine was on 2nd floor (3F in japan) and stairs are quite high. The host kindly helped me to take my luggage up but I struggled on my own to carry it down. Also just going up and down to go to the kitchen for a tea isn't easy if you have weak legs like me.
It also a bit noisy at night, due to sound-proofing: toilets and washbasin being in the corridor, each time other guests go to toilets their door bangs loudly