A genuine dry sauna located in the New Wing panoramic bath overlooking the Ariake Sea. Sauna stones piled on a convection-style stove produce clear radiant heat. The room is equipped with a TV and offers a relaxed atmosphere. The L-shaped layout provides generous movement space, and the seaside openness with the scent of the sea adds a distinct freshness to the time spent sweating.

A high-temperature sauna in the Main Building’s therapeutic bathhouse that retains the atmosphere of a traditional toji (therapeutic bathing) site. A METOS ZIEL unit (stone-heated, convection-style) circulates strong heat throughout the room, delivering warmth to the core. The slightly higher ceiling makes the perceived heat milder, allowing for longer stays. In this tranquil space without a TV, you can enjoy a contemplative sauna time alongside local regulars, evoking the charm of a therapeutic inn.

A cold plunge bath located immediately outside the sauna room. Fresh water is constantly supplied, making the water feel soft to the touch and kept at an easy-to-enter temperature. It has sufficient depth to properly tighten the body warmed by the sauna. Beyond the cold plunge bath is an outdoor bathing area, allowing a smooth transition to outdoor rest while gazing at the Ariake Sea and the stars. A totonou chair is also available, making a break while enjoying the sea breeze especially rewarding.

A wooden, bathtub-style cold plunge bath located directly in front of the sauna in the Main Building therapeutic bathhouse. Fresh water is continuously poured from a faucet to maintain water quality. It is a compact, single-person design that allows focused cooling down.