The Tonosawa hot spring is one of the seven hot springs in Hakone. At the end of a suspension bridge over the Hayakawa River, which flows through the ravine between Tanomine and Yusakayama, there is a ryokan called "Yama no Chaya" surrounded by a bamboo grove. There are a total of 15 guest rooms with views of nature in all four seasons. All of the baths, including the atmospheric open-air bath, are filled with hot spring water from a private source, and the colors of the season spread out on the plates of carefully selected kaiseki cuisine.