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Indulge in the ultimate relaxation and rejuvenation at Sansui Hotel’s exquisite onsen facilities. Our guests can immerse themselves in the serene ambiance of traditional Japanese hot springs, both in our communal onsen and private onsen spaces. Discover a tranquil haven where body and mind find harmony amidst the breathtaking surroundings of Niseko.


Winter: 06:00-12:00 15:00 – 00:00
Summer 06:00 – 12:00 15:00 – 22:00

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Rooted in Japanese culture for centuries, an onsen refers to a natural hot spring renowned for its therapeutic properties. These mineral-rich waters are believed to have healing effects, providing relief to various ailments and promoting overall well-being. Onsen bathing is not only a cherished tradition but a cherished way of life in Japan.

Dating back to ancient times, onsens have been revered for their healing powers, attracting visitors seeking relaxation and health benefits. Throughout Japan, various regions boast unique onsen experiences, and Niseko, with its geothermal blessings, is no exception.


The mineral-rich waters of onsens offer a plethora of health benefits. The natural heat from the springs helps alleviate muscle tension, reduce stress, and improve blood circulation. The minerals present in the waters, such as sulfur, calcium, and magnesium, can have a soothing effect on the skin, leaving it feeling soft and rejuvenated. Immerse yourself in our communal onsen or private onsen spaces and let the healing powers of the waters restore your body and mind.


Winter: 06:00-12:00 15:00 – 00:00
Summer 06:00 – 12:00 15:00 – 22:00


For guests seeking extra privacy and exclusivity, our Sansui Private Onsen Experience offers an intimate escape in your own secluded onsen space. Surrounded by stunning natural beauty, you can relax and soak in the therapeutic waters without interruption. Our private onsen space is thoughtfully designed to provide an enchanting and tranquil setting for a truly memorable experience. Please inquire with our team to reserve your private onsen session, and let us curate an exceptional onsen journey tailored to your preferences.


Offering the best of Eastern and Western treatments, Sansui Spa provides guests with relaxing experiences. All treatments will ensure guests feel restored and ready for the day ahead.