A beautiful open-air bath made of polished granite, connected to the large public bath. It is filled with the rare Kogane no Yu, a hot spring long associated with Ikaho Onsen that contains iron and turns brown when exposed to the air, offered as a fresh, fully free-flowing spring with no added water or reheating. In an outstanding location surrounded by quiet natural woodland and gardens on a site of about 15,000 tsubo, you can fully savor the finest onsen atmosphere while feeling the clear air like you are forest bathing.

A clean, spacious indoor bath that serves as the route to the sauna and open-air bath. The water uses Shiragane no Yu, Ikaho's newer spring, which is colorless, transparent, and gentle on the skin. With filtration and circulation for constant cleanliness and a comfortable temperature, the hot spring gently warms your body stiffened by travel and serves as an excellent starting point for alternating hot-and-cold bathing, connecting smoothly to the sauna, cold bath, and free-flowing open-air bath while loosening both body and mind.

Two luxurious private baths with different atmospheres, where you can enjoy Ikaho's famous hot spring exclusively without worrying about anyone else in a private space. The water is the transparent Shiragane no Yu, which is gentle and suitable for everyone from small children to elderly guests, making it ideal for private moments with family or as a couple. There is also a newly built private bath suite with a private spa design, offering a high-quality, quiet private bathing experience.