Tochigi Nasu Town
A secluded retreat in the Nasu Highlands, with the milky-white Shikanoyu onsen fed straight from the source, never recirculated
Fourtreat+Nasukogen is a retreat inn in Nasu, Nasu District, Tochigi Prefecture. Surrounded by the clear air of the highlands, it offers a refined stay for adults. Its greatest highlight is the open-air bath, where you can enjoy Shikanoyu, a celebrated onsen with the longest history in Tochigi Prefecture, fed straight from the source, never recirculated. The milky-white, slightly viscous acidic sulfur-bearing spring water soothes away the day’s fatigue from deep within. At the spectacular lounge overlooking the Kanto Plain, enjoy wine and finger foods from 3:00 p.m. to 6:00 p.m. After 6:00 p.m., spend an elegant moment with coffee as you listen to the sound of records. The inn also offers STEAM SPA, a bathing therapy exclusively for women, where you can unwind away from everyday life enveloped in warm steam.

An open-air bath where you can enjoy Shikanoyu, a celebrated onsen with the longest history in Tochigi Prefecture, fed straight from the source, never recirculated. The milky-white, slightly viscous acidic sulfur-bearing spring water softly coats the skin, leaving it feeling moisturized even after bathing. Take in the clear highland air and, at night, gaze up at a sky filled with stars as you soak in this spectacular setting. There is also a spacious indoor bath filled with heated water, where you can stretch out and unwind.

A bathing therapy exclusively for women, where warm steam envelops the body and warms it from within. In a private space filled with soothing scents and warm steam, gently ease away the effects of feeling cold, fatigue, and emotional strain. Settle into a moment of deep relaxation and restore your sense of balance.
Availability and rates are shown on each booking site.
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Main bathhouse hours: 5:00–10:00 a.m. / 12:00 p.m.–midnight Please note that due to scheduled cleaning, afternoon service may begin at 3:00 p.m. on some dates. Please contact the inn directly for details.
Guests with tattoos may use the baths and pool only if their tattoos can be covered with two cover stickers provided by the inn.
By car
By train and bus
Shuttle
Depending on the navigation system, you may be directed onto a back road off the prefectural road. In winter, snow can cause tires to get stuck. Guests wishing to use the Kanto Bus service should appl
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