A renovated dry sauna in the main building's Furusato no Yu. It features a stone convection sauna stove and allows self-löyly. The löyly water is infused with aroma and fragrant hojicha, and when poured over the sauna stones, a pleasant fragrance, rich heat, and steam instantly fill the room. Surrounded by the clean scent of wood, you can experience authentic sweating and deep relaxation.

A bonasarm sauna located in the annex's Utsukushi no Yu. Because the sauna stove is built into the area beneath the benches and behind the seats, the room feels very clean and uncluttered, and it is less exposed to direct radiant heat. It offers mild heat that warms the body gently and thoroughly, along with moderate humidity, so both beginners and experienced sauna-goers can enjoy it comfortably without feeling stifled. A relaxing sauna where you can work up a sweat as if quietly meditating.

A cold plunge bath located right next to the main building sauna. It is filled with thoroughly chilled water, offering a refreshing, crisp reset for a body heated to its limit in the löyly sauna. The cooling sensation is very sharp at first, but after entering, it gradually changes into a pleasant freshness. After cooling down, it flows smoothly into the ultimate outdoor air bath on the reclining chairs set up on the wood-deck outdoor area adjacent to the open-air bath space.

A cold plunge bath in the annex's Utsukushi no Yu. Compared with the one in the main building, the temperature here is set a little milder, making it ideal for those who want a gentler cooldown after the sauna or for people who are not very comfortable with cold plunge baths. Its defining feature is a temperature range that allows you to sink in slowly and comfortably, easing your overheated body with gentle cool water and letting you linger in the calm, quiet atmosphere of the annex bathhouse as you savor the afterglow of refreshment.