Kaike Grand Hotel Tensui
皆生グランドホテル天水
A private hot-spring source with baths facing the Sea of Japan
Day Use
YesDay-use bathing may not be available on some days depending on how many overnight guests are staying; call ahead to check.
Adult 1,200 yen, child (age 3 through elementary school) 600 yen; junior high school students pay the adult rate. A bath towel is not included, bring your own or rent one for a fee.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
A private bath you can reserve for yourself or your group
Shared bathing area for all genders
Policies & Services
Welcomes children and families
A restaurant or dining room open to visitors, not only meals for overnight guests
Day-use dining is offered only on select dates and needs an advance phone reservation.
Towels to rent or borrow at the desk
A bath towel is not automatically provided for day-use bathing; bring your own or rent one for a fee.
On-site or nearby parking available
Views
SeaAbout
Kaike Grand Hotel Tensui draws its baths from its own hot-spring source, named Hosho no Izumi (宝生の泉), one of the few private springs among the many inns and hotels of Kaike Onsen. Both the indoor bath, called Nihonkai (日本海), and the outdoor rotenburo look straight out at the Sea of Japan, close enough to hear the waves, and each side, men's and women's, has its own sauna (though there is no cold bath to follow it with). It's a long-standing hotel right on the Kaike beachfront: the building has some age to it from decades by the sea, and dinner is a seafood-heavy buffet served in its restaurant, Nagisatei (渚亭).
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Last updated September 29, 2026