About Marukoma Onsen Ryokan, the lakeside inn on Lake Shikotsu

Marukoma Onsen Ryokan is a long-established hidden hot spring inn founded in 1915, standing on the shores of Lake Shikotsu in Hokkaido. It features a natural open-air bath with rare spring water bubbling up from beneath your feet, one of the very few in Japan, offering a mystical bathing experience that feels united with nature as the water depth changes in sync with the lake level. The gender-separated large baths are equipped with an authentic Finnish löyly sauna that will impress even seasoned sauna enthusiasts. After enjoying the gentle steam rising from water poured over the heated sauna stones and working up a deeply satisfying sweat, head to the cold plunge bath fed by the crystal-clear waters of Lake Shikotsu, which has repeatedly been ranked Japan's best for water quality. After cooling down in the cold water that wraps around the skin like a celestial robe, you can savor the ultimate totonou in the outdoor air-rest area overlooking the magnificent scenery of the national park. For guests seeking privacy, there are also private baths with a barrel sauna, private baths with open-air baths, and a fully private outdoor sauna called Lakefront SAUNA. Surrounded by untouched nature, you can fully enjoy a high-quality moment of relaxation uninterrupted by anyone else.