An inn of relaxation in the center of Iga, where you can enjoy the only in-house spring, "Basho no Yu"
Mie Iga City
"Hill Hotel Sunpia Iga" is an accommodation facility in Iga City, Mie Prefecture, equipped with a natural hot spring. Guests can enjoy two types of large public baths, one Japanese-style and one Western-style, on alternating days, and each is fully equipped with a dry sauna for working up a good sweat and a crisp cold plunge bath. Its biggest attraction is the natural hot spring "Basho no Yu," sourced from the hotel’s own spring. The alkaline simple spring with a pH of 9.4 has a silky, lotion-like texture. You can fully enjoy the sauna and the renowned bath, then refresh yourself while feeling the pleasant breeze in the outdoor air-rest area.
TypeNatural Hot Spring
A natural hot spring using an in-house source that gushes from the property. This alkaline simple spring has a pH of 9.4 and is characterized by its silky, soft bathwater, almost like a beauty serum. It is loved as a "beautifying bath" that helps remove old keratin from the skin and leaves it smooth and supple. You can fully enjoy this renowned bath in the Japanese-style and Western-style open-air baths and indoor baths, each with its own atmosphere.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity15people
A dry sauna installed in both the Japanese-style bath and the Western-style bath. An electric stove thoroughly heats the room, allowing you to work up a full sweat in a quiet space with no TV. Sauna mats are provided for clean and comfortable use.
Water QualityTap Water
Capacity2people
A compact cold plunge bath located right next to the sauna room. The water temperature is adjusted according to the season, so it is colder in summer and kept at an easier-to-enter temperature in winter. It cools and tightens your body after the sauna, and you can move smoothly to the outdoor air-rest area in the open-air section.
Closed Days: None
2756-104 NishiAihji, Iga City, Mie Prefecture 518-0809
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
An inn of relaxation in the center of Iga, where you can enjoy the only in-house spring, "Basho no Yu"
Mie Iga City
"Hill Hotel Sunpia Iga" is an accommodation facility in Iga City, Mie Prefecture, equipped with a natural hot spring. Guests can enjoy two types of large public baths, one Japanese-style and one Western-style, on alternating days, and each is fully equipped with a dry sauna for working up a good sweat and a crisp cold plunge bath. Its biggest attraction is the natural hot spring "Basho no Yu," sourced from the hotel’s own spring. The alkaline simple spring with a pH of 9.4 has a silky, lotion-like texture. You can fully enjoy the sauna and the renowned bath, then refresh yourself while feeling the pleasant breeze in the outdoor air-rest area.
TypeNatural Hot Spring
A natural hot spring using an in-house source that gushes from the property. This alkaline simple spring has a pH of 9.4 and is characterized by its silky, soft bathwater, almost like a beauty serum. It is loved as a "beautifying bath" that helps remove old keratin from the skin and leaves it smooth and supple. You can fully enjoy this renowned bath in the Japanese-style and Western-style open-air baths and indoor baths, each with its own atmosphere.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity15people
A dry sauna installed in both the Japanese-style bath and the Western-style bath. An electric stove thoroughly heats the room, allowing you to work up a full sweat in a quiet space with no TV. Sauna mats are provided for clean and comfortable use.
Water QualityTap Water
Capacity2people
A compact cold plunge bath located right next to the sauna room. The water temperature is adjusted according to the season, so it is colder in summer and kept at an easier-to-enter temperature in winter. It cools and tightens your body after the sauna, and you can move smoothly to the outdoor air-rest area in the open-air section.
Closed Days: None
2756-104 NishiAihji, Iga City, Mie Prefecture 518-0809
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