A natural hot spring rich in the blessings of alkaline simple thermal water. The water feels extremely soft and is cherished as a skin-beautifying bath that blends gently with the skin. There are two differently designed large baths created by space designer Hisanobu Tsujimura: Hikarinohakobune, where a luminous glass bathtub seems to float in the air, and Yuyake, which offers a sweeping view of the beautiful sunset sinking behind Mt. Daruma. They are available on a rotating basis for men and women. Surrender yourself to the fresh water that flows abundantly, and enjoy supreme healing while admiring the deep greenery by day and the star-filled sky by night.

A reservation-only private bath where you can fully enjoy a private moment. A major attraction is the ability to quietly and exclusively enjoy alkaline simple thermal water with rich spring temperature without worrying about other people. It has an open-air design surrounded by gently swaying trees, and although the use of soap and similar products is restricted for environmental conservation, you can instead fully appreciate the bath's soft water quality and silence. Reservations are accepted on a first-come, first-served basis at check-in, allowing you to spend blissful bathing time undisturbed by anyone.

A private semi-open-air bath provided in a special room with an open-air bath. Luxuriously built from Izu stone and surrounded by warm karin wood, this tasteful bathtub is filled with 100% natural hot spring water rich in benefits and therapeutic effects. With the fresh nature of Shuzenji and the clear air spreading out before you, it promises an exceptional stay where you can indulge in quality hot spring water all to yourself, whenever you like, 24 hours a day, without worrying about anyone else.