Bayside Square Kaike Hotel
ベイサイドスクエア皆生ホテル
Day Use
YesOpen every day. Closed 10:00-11:00 and midnight-6:00; the men's and women's baths swap between the early-morning and main sessions.
Main session (11:00-23:00, last entry 22:00): 700 yen adult on weekdays, 800 yen weekend/holiday, 400 yen child. Discounted early-morning session (6:00-10:00, last entry 9:00): 400 yen adult weekday, 500 yen weekend/holiday, 400 yen child; sauna is not available in this session. Kanpatsubo (汗溌房), the Korean-style low-temperature sauna and ganbanyoku room, is an extra 1400 yen weekday / 1500 yen weekend-holiday (not offered in the early-morning session); hotel guests pay 1000 yen.
Bathing & Water
Uses natural hot spring water
Enclosed indoor bathing area
Dry heat sauna room
Sauna in the men's/women's baths is not usable during the early-morning session (6:00-10:00); separately, a Korean-style low-temp sauna/ganbanyoku room (汗溌房) is offered as a paid add-on.
Capabilities
Private onsen bath in guest rooms, for overnight guests only
Only the Deluxe Oceanview Spa room category has its own onsen bath; other room types do not.
Shared bathing area for all genders
Baths are gender-separated; the men's and women's baths simply swap between the early-morning and main sessions.
Policies & Services
Allows entry with visible tattoos
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Relaxation space for after bathing
On-site or nearby parking available
Views
SeaHighlights
GanbanyokuAbout
Bayside Square Kaike Hotel's day-use bath, Shio no Yu (汐の湯), is a viewing bath looking out over the Sea of Japan. The men's and women's baths are separated and swap between the discounted early-morning session and the main session; the main baths have a sauna (not available during the early-morning session), and a separate paid room, Kanpatsubo (汗溌房), offers a Korean-style low-temperature sauna and ganbanyoku. One room category, Deluxe Oceanview Spa, has its own hot-spring bath fed gensen kakenagashi (源泉かけ流し). The hotel sits right on the water in Kaike Onsen, close enough for an evening walk along the beach. Guests describe it as an easygoing, family-friendly place, and several reviews mention a substantial breakfast buffet.
Loading map…
Reserve or check availability on a booking site.
No reviews yet
Be the first to share your experience!
Last updated August 5, 2026