A large public bath available to all overnight guests. The water is 100% free-flowing Bandai Kō spring water, renowned in Kusatsu Onsen for its highest output and characterized by powerful antibacterial effects and high acidity. In addition to the modern, bright indoor bath accented with granite, there is a beautiful open-air bath made entirely of cypress, facing about 3,000 tsubo of natural forest, where you can surrender yourself to the seasonal breeze and the sounds of nature and enjoy an exquisite bath while taking in the forest atmosphere.

A private open-air bath available only to guests staying in the main building's Sakon no Mune wing, for a fee and by advance reservation. Unlike the Bandai Kō water in the large public bath, you can luxuriously reserve the more mellow and historically significant Yubatake spring water, which is the most venerable in Kusatsu, in a free-flowing bath. In the spacious open-air area surrounded by lush greenery as far as the eye can see, a beautifully polished cypress tub stands quietly, and the refreshing scent of cypress blended with sulfur fragrance deeply refreshes both body and mind.

A luxurious private open-air bath with free-flowing spring water, installed in detached rooms and other signature accommodations at Tsutsujitei. Each room has a carefully designed tub with a different character, allowing you to enjoy Kusatsu's fresh hot spring water whenever and as many times as you like while feeling the stillness of the 5,000 tsubo forest and the birdsong up close. It offers a top-tier bathing experience, as if you were visiting a private villa.