Hokkaido Sobetsu Town
An infinity onsen that merges with Lake Toya and an authentic sauna with spectacular views
The Lake Suite Konosumika is a luxury resort inn in Sobetsu, Hokkaido. On the top floor, an infinity-style open-air bath merges with Lake Toya, offering blissful bathing as if you were floating in the sky. The sauna also looks out over timeless nature, and the cold plunge, filled with lake water, makes for a pleasant cool-down. Every room comes with its own onsen open-air bath, so you can savor the fine chloride spring water to your heart’s content in a private space where no one will disturb you.

The main bathhouse on the top floor has an infinity-style open-air bath spread across three tiers like terraced rice paddies. Built to jut out toward the lake, it gives an overwhelming sense of openness, as if you were floating in the sky and joined with Lake Toya. The water is a sodium-calcium chloride-bicarbonate-sulfate spring that retains heat well and feels gentle on the skin. On clear nights the sky fills with stars, promising a supreme bathing experience at one with nature.

Every guest room has its own onsen open-air bath on the terrace. The greatest appeal is enjoying natural onsen water whenever and for as long as you like, without worrying about anyone watching. With the beautiful lake view below all to yourself, time spent giving yourself over to the water in a pleasant breeze becomes a special private experience that lets you forget the bustle of daily life.

A dry sauna with a sweeping view of Lake Toya. Through the large windows you can gaze out at timeless nature in a calm, quiet space and spend exceptional moments you won’t find anywhere else. Powerful heat wraps your whole body and slowly draws out sweat from deep within. Drinking water is provided right in front of the sauna to keep you comfortable.

Right beside the sauna is the cold plunge, lavishly filled with lake water that feels soft on the skin. The crisp, cool water refreshes your flushed body, the cold pulling it taut for an excellent cool-down. There is also a jetted cold plunge with bubbles rising from the floor, gently loosening the whole body with a massaging effect. From here you can move easily to the after-bath living terrace for cooling off in the open air and sink into deep relaxation.
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