
THERMAL SPA S.WAVE at Oiso Prince Hotel is a hot spring and spa facility where you can escape the everyday and enjoy an extraordinary experience. Nestled within is the SEA VOYAGE SHONAN SALON, where you can indulge in a moment of healing with luxurious treatments made from carefully selected ingredients.
*SEA VOYAGE SHONAN SALON requires reservations.



4th-floor of THERMAL SPA S.WAVE
10:00 A.M.–9:00 P.M.
(Last treatment starts at 8:30 P.M.)
Phone Number
+81 (0) 463-57-1113 (Direct line to the salon)
*Access to the fourth-floor spa area of THERMAL SPA S.WAVE varies depending on your accommodation plan. Please refer to the spa treatment details (available in Japanese only).
* Guests aged 12 and over are counted as adults.
* Guests under the age of 12 may only use the third-floor hot springs area.
* Swimwear is required in the fourth-floor spa area.
* Rental swimwear is available (additional fee applies; limited quantities).
* Guests with tattoos are not permitted to use THERMAL SPA S.WAVE.
* Guests who wear diapers may not use THERMAL SPA S.WAVE.

