Gentle skin-beautifying hot spring water from its own source and two major open-air baths
Niigata Niigata City
Yumotoya is a long-established hot spring ryokan in Iwamuro Onsen, Nishikan Ward, Niigata City. It offers two attractive large public baths: the dynamic Garan no Yu, built with massive rocks, and Yumedono, where you can feel the warmth of large logs. You can fully enjoy Iwamuro’s own hot spring source, famed as a skin-beautifying bath. Each of the gender-swapped large public baths is equipped with a compact, comfortable sauna scented with wood. There is also the semi-open-air private bath Yuraku and professional relaxation bodywork, offering a peaceful and relaxing stay together with fine seafood and locally sourced kaiseki cuisine.
TypeNatural Hot Spring
Iwamuro Onsen has long been cherished as a famous skin-beautifying hot spring. Its water is a mild, smooth sulfur spring that leaves the skin feeling soft and supple, and the warm afterbath feeling lasts especially long. You can enjoy a luxurious bath-hopping experience while admiring the natural trees and scenery, from the rugged rock open-air bath of Garan no Yu to the open-air bath lined with large logs at Yumedono.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity5people
A compact sauna attached to the large public bath. The pleasant scent of fresh wood gently fills the room, while mild yet satisfyingly warm heat wraps around your entire body. It is a clean, calm space that encourages abundant sweating as you warm up at a leisurely pace. It also pairs excellently with cooling down in the open air while looking out over the large bath’s open-air bath and the surrounding lush greenery.
Closed Days: None
〒953-0104 Niigata Prefecture, Niigata City, Nishikan Ward, Iwamuro Onsen 91-1
Gender Access
Gender Separated
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
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 moreGentle skin-beautifying hot spring water from its own source and two major open-air baths
Niigata Niigata City
Yumotoya is a long-established hot spring ryokan in Iwamuro Onsen, Nishikan Ward, Niigata City. It offers two attractive large public baths: the dynamic Garan no Yu, built with massive rocks, and Yumedono, where you can feel the warmth of large logs. You can fully enjoy Iwamuro’s own hot spring source, famed as a skin-beautifying bath. Each of the gender-swapped large public baths is equipped with a compact, comfortable sauna scented with wood. There is also the semi-open-air private bath Yuraku and professional relaxation bodywork, offering a peaceful and relaxing stay together with fine seafood and locally sourced kaiseki cuisine.
TypeNatural Hot Spring
Iwamuro Onsen has long been cherished as a famous skin-beautifying hot spring. Its water is a mild, smooth sulfur spring that leaves the skin feeling soft and supple, and the warm afterbath feeling lasts especially long. You can enjoy a luxurious bath-hopping experience while admiring the natural trees and scenery, from the rugged rock open-air bath of Garan no Yu to the open-air bath lined with large logs at Yumedono.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity5people
A compact sauna attached to the large public bath. The pleasant scent of fresh wood gently fills the room, while mild yet satisfyingly warm heat wraps around your entire body. It is a clean, calm space that encourages abundant sweating as you warm up at a leisurely pace. It also pairs excellently with cooling down in the open air while looking out over the large bath’s open-air bath and the surrounding lush greenery.
Closed Days: None
〒953-0104 Niigata Prefecture, Niigata City, Nishikan Ward, Iwamuro Onsen 91-1
Gender Access
Gender Separated
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
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