Spacious sauna at a roadside station and a skin-beautifying natural hot spring
Kagoshima Osaki Town
Asuparu Osaki Shuin-no-Yu is a hot spring facility attached to the Michi-no-Eki Kuni no Matsubara Osaki in Osaki Town. It sits on a large site that also includes lodging, restaurants, and a local products shop. The spring is a sodium bicarbonate-chloride hot spring with a slippery, smooth bathing feel that leaves skin soft. The facility features a spacious far-infrared dry sauna that can accommodate up to 25 people and a well-cooled cold plunge bath, and it is reputed to offer a genuinely authentic sauna experience that belies its roadside station location.
TypeNatural Hot Spring
A colorless, transparent sodium bicarbonate-chloride hot spring (appearing yellowish-brown at the source). The water has a slippery, silky texture that leaves skin smooth, making it a beautifying hot spring. The large public bath offers a variety of pools including a bubble bath, reclining bath, utase-yu (waterfall massage bath), and electric bath, and there is also an outdoor bath.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity25people
A far-infrared dry sauna with wide three-tier benches that can seat up to about 25 people side by side. The room temperature is set in the 80°C range, but the balance of humidity and radiant heat makes the perceived temperature feel higher. Sauna mats are provided, and the spacious, clean environment allows for a thorough sweat.
Water QualityTap Water
Capacity5people
A relatively large cold plunge bath located immediately outside the sauna room, where 4–6 adults can stretch their legs. Inflow from the outlet is steady, keeping the water consistently clean. The water temperature is around 19°C, a pleasant setting that pairs perfectly with the hotter sauna.
Closed Days: Monday
2419 Jinryō, Osaki, Soo District, Kagoshima 899-7302, Japan
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
Spacious sauna at a roadside station and a skin-beautifying natural hot spring
Kagoshima Osaki Town
Asuparu Osaki Shuin-no-Yu is a hot spring facility attached to the Michi-no-Eki Kuni no Matsubara Osaki in Osaki Town. It sits on a large site that also includes lodging, restaurants, and a local products shop. The spring is a sodium bicarbonate-chloride hot spring with a slippery, smooth bathing feel that leaves skin soft. The facility features a spacious far-infrared dry sauna that can accommodate up to 25 people and a well-cooled cold plunge bath, and it is reputed to offer a genuinely authentic sauna experience that belies its roadside station location.
TypeNatural Hot Spring
A colorless, transparent sodium bicarbonate-chloride hot spring (appearing yellowish-brown at the source). The water has a slippery, silky texture that leaves skin smooth, making it a beautifying hot spring. The large public bath offers a variety of pools including a bubble bath, reclining bath, utase-yu (waterfall massage bath), and electric bath, and there is also an outdoor bath.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity25people
A far-infrared dry sauna with wide three-tier benches that can seat up to about 25 people side by side. The room temperature is set in the 80°C range, but the balance of humidity and radiant heat makes the perceived temperature feel higher. Sauna mats are provided, and the spacious, clean environment allows for a thorough sweat.
Water QualityTap Water
Capacity5people
A relatively large cold plunge bath located immediately outside the sauna room, where 4–6 adults can stretch their legs. Inflow from the outlet is steady, keeping the water consistently clean. The water temperature is around 19°C, a pleasant setting that pairs perfectly with the hotter sauna.
Closed Days: Monday
2419 Jinryō, Osaki, Soo District, Kagoshima 899-7302, Japan
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