
Enjoy a uniquely Japanese moment of relaxation for both body and mind in our natural hot spring.
We offer separate open-air and indoor baths for men and women, each sourced from Oiso Onsen, a mineral-rich hot spring known for its warming salt content. From the 8.5-meter-long open-air bath, you can take in a sweeping view of the Pacific Ocean.

Third-floor ONSEN Floor of THERMAL SPA S.WAVE
6:00 A.M. – 12:00MID
* Staying guest: Last entry at 11:30 P.M.
Included in your stay plan.
*Guests with tattoos are not permitted to use THERMAL SPA S.WAVE.
*Guests who wear diapers may not use THERMAL SPA S.WAVE.
*Photography and video recording are not allowed on the third-floor ONSEN Floor.
*Please respect Japanese bathing etiquette and enjoy this aspect of Japanese culture.