A Stadium Sauna, a wide variety of bedrock baths, and an exquisite löyly experience
Chiba Narashino City
"Spa Resort Nananoyu" is a large spa resort in Narashino City, Chiba Prefecture. At the region's largest-class Stadium Sauna, passionate löyly (aufguss) sessions are held regularly by staff, letting guests enjoy refreshing perspiration with dynamic waves of heat. It also features a salt sauna that women will love, as well as 7 different types of bedrock baths, each with its own atmosphere. The spacious cold plunge bath is kept clean at all times, instantly refreshing your overheated body after sauna use. In the open-air area, carbonated springs and tsubo-yu tubs are lined up, and relaxing in the outdoor air on the well-appointed reclining chairs is pure bliss. With dining facilities and relaxation services as well, this is a place where you can pursue tototonou all day long without ever getting bored.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity30people
A spacious sauna room in a stadium-style layout with tiered seating. During regularly held aufguss events, staff wave towels to send powerful waves of heat, quickly encouraging you to sweat. The heat circulates extremely well, allowing for an energetic sauna experience while watching TV.
Sauna TypeSalt Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A salt sauna where you can work up a sweat at a low temperature at a leisurely pace. By applying the salt provided in the room to your body, you can wash away old dead skin cells along with perspiration and leave your skin smooth. Wrapped in gentle warmth, you can enjoy a luxurious time that delivers both beauty benefits and detoxification at once.
Water QualityTap Water
Capacity10people
A relaxing cold plunge bath that boasts region-leading size. Its crisp, cold water temperature quickly cools down your overheated body after sauna use. The water feels gentle on the skin, and its sufficient depth makes it possible to submerge your whole body properly. With a smooth flow of movement, it also supports a comfortable tototonou experience that leads naturally into outdoor air bathing afterward.
Closed Days: None
1-1-1 Honokubo, Narashino City, Chiba Prefecture 275-0012
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 Stadium Sauna, a wide variety of bedrock baths, and an exquisite löyly experience
Chiba Narashino City
"Spa Resort Nananoyu" is a large spa resort in Narashino City, Chiba Prefecture. At the region's largest-class Stadium Sauna, passionate löyly (aufguss) sessions are held regularly by staff, letting guests enjoy refreshing perspiration with dynamic waves of heat. It also features a salt sauna that women will love, as well as 7 different types of bedrock baths, each with its own atmosphere. The spacious cold plunge bath is kept clean at all times, instantly refreshing your overheated body after sauna use. In the open-air area, carbonated springs and tsubo-yu tubs are lined up, and relaxing in the outdoor air on the well-appointed reclining chairs is pure bliss. With dining facilities and relaxation services as well, this is a place where you can pursue tototonou all day long without ever getting bored.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity30people
A spacious sauna room in a stadium-style layout with tiered seating. During regularly held aufguss events, staff wave towels to send powerful waves of heat, quickly encouraging you to sweat. The heat circulates extremely well, allowing for an energetic sauna experience while watching TV.
Sauna TypeSalt Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
A salt sauna where you can work up a sweat at a low temperature at a leisurely pace. By applying the salt provided in the room to your body, you can wash away old dead skin cells along with perspiration and leave your skin smooth. Wrapped in gentle warmth, you can enjoy a luxurious time that delivers both beauty benefits and detoxification at once.
Water QualityTap Water
Capacity10people
A relaxing cold plunge bath that boasts region-leading size. Its crisp, cold water temperature quickly cools down your overheated body after sauna use. The water feels gentle on the skin, and its sufficient depth makes it possible to submerge your whole body properly. With a smooth flow of movement, it also supports a comfortable tototonou experience that leads naturally into outdoor air bathing afterward.
Closed Days: None
1-1-1 Honokubo, Narashino City, Chiba Prefecture 275-0012
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