A "hot spring of warmth" gushing up from 1500 meters underground, plus an ochre sauna — an authentic spa resort in front of Nishiarai Station
Tokyo Adachi City
"THE SPA Nishiarai" is a full-scale spa resort facility located in front of Nishiarai Station in Adachi City, Tokyo. The "sodium-chloride strong saline hot spring" that gushes up from 1500 meters underground is rich in minerals and is affectionately known as the "hot spring of warmth" for its excellent heat-retention and moisturizing effects. The sauna is equipped with an ochre sauna with strong far-infrared effects, gently encouraging perspiration from deep within the body. The women's floor also features a steam mist sauna and a salt sauna, allowing for a wide variety of sauna experiences. Along with the crisply cold cold plunge bath and the open-air bath, you can spend a luxurious and restorative moment in the heart of the city.
TypeNatural Hot Spring
A mineral-rich strong saline hot spring that gushes up from 1500 meters underground. Because the salt adheres to the skin and prevents sweat from evaporating, it is famous as the "hot spring of warmth" for its outstanding heat-retention and moisturizing effects. You can fully enjoy its rich benefits in a variety of baths, including indoor baths, open-air baths, and reclining baths.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A dry sauna room with walls made of ochre, offering strong far-infrared effects. The components released from the ochre are said to promote detoxification and efficiently induce perspiration from deep within the body. A clean, refreshing space where you can slowly work up a sweat and recharge in stable heat.
Sauna TypeMist Sauna
Capacity6people
A steam sauna on the women's floor with a pleasant mint fragrance. Even if you are not comfortable with high-temperature saunas, you can use it without strain, and the moist steam gently hydrates the skin. A soothing space where you can relax gently while surrounded by the scent of herbs.
Sauna TypeSalt Sauna
Capacity6people
A sauna room exclusive to the women's floor where you can enjoy the skin-beautifying effects of salt. As you sweat, the salt helps remove dead skin cells, leaving your skin feeling smooth and polished. A beauty-focused sauna experience that is especially popular with women who want to maintain skin firmness and moisture.
Water QualityTap Water
Capacity3people
A crisply cold cold plunge bath that quickly tightens up your overheated body after the sauna. Careful temperature control ensures a refreshing cooldown. By alternating between sauna and bath, you can boost metabolism and powerfully support recovery from fatigue.
Closed Days: None
3F Central, 1-17-10 Nishiarai Sakaecho, Adachi-ku, Tokyo 123-0843
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
A "hot spring of warmth" gushing up from 1500 meters underground, plus an ochre sauna — an authentic spa resort in front of Nishiarai Station
Tokyo Adachi City
"THE SPA Nishiarai" is a full-scale spa resort facility located in front of Nishiarai Station in Adachi City, Tokyo. The "sodium-chloride strong saline hot spring" that gushes up from 1500 meters underground is rich in minerals and is affectionately known as the "hot spring of warmth" for its excellent heat-retention and moisturizing effects. The sauna is equipped with an ochre sauna with strong far-infrared effects, gently encouraging perspiration from deep within the body. The women's floor also features a steam mist sauna and a salt sauna, allowing for a wide variety of sauna experiences. Along with the crisply cold cold plunge bath and the open-air bath, you can spend a luxurious and restorative moment in the heart of the city.
TypeNatural Hot Spring
A mineral-rich strong saline hot spring that gushes up from 1500 meters underground. Because the salt adheres to the skin and prevents sweat from evaporating, it is famous as the "hot spring of warmth" for its outstanding heat-retention and moisturizing effects. You can fully enjoy its rich benefits in a variety of baths, including indoor baths, open-air baths, and reclining baths.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A dry sauna room with walls made of ochre, offering strong far-infrared effects. The components released from the ochre are said to promote detoxification and efficiently induce perspiration from deep within the body. A clean, refreshing space where you can slowly work up a sweat and recharge in stable heat.
Sauna TypeMist Sauna
Capacity6people
A steam sauna on the women's floor with a pleasant mint fragrance. Even if you are not comfortable with high-temperature saunas, you can use it without strain, and the moist steam gently hydrates the skin. A soothing space where you can relax gently while surrounded by the scent of herbs.
Sauna TypeSalt Sauna
Capacity6people
A sauna room exclusive to the women's floor where you can enjoy the skin-beautifying effects of salt. As you sweat, the salt helps remove dead skin cells, leaving your skin feeling smooth and polished. A beauty-focused sauna experience that is especially popular with women who want to maintain skin firmness and moisture.
Water QualityTap Water
Capacity3people
A crisply cold cold plunge bath that quickly tightens up your overheated body after the sauna. Careful temperature control ensures a refreshing cooldown. By alternating between sauna and bath, you can boost metabolism and powerfully support recovery from fatigue.
Closed Days: None
3F Central, 1-17-10 Nishiarai Sakaecho, Adachi-ku, Tokyo 123-0843
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more