JosoONSEN&SAUNAOyumusubi

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Ibaraki Joso City

"Joso ONSEN&SAUNA Oyumusubi" is a day-use hot spring facility located in Joso City, Ibaraki Prefecture. It is conveniently located about 1 minute by car from the Ken-O Expressway "Joso IC" and adjacent to TSUTAYA BOOKSTORE. This new bathing facility is set to open in November 2024. The large public bath features a high-temperature sauna at 110°C and a cold plunge bath using natural underground water with a depth of 110cm. You can sweat it out quickly with the aromatic auto löyly. Relax in the natural hot spring from the private source and the high-concentration carbonated spring, and enjoy the restaurant and relaxation facilities. On a separate floor, there is also one of the largest mixed-gender sauna areas in the Kanto region (8 rooms), offering a variety of bathing experiences.

Hot Spring & Bath Information

Bath

TypeNatural Hot Spring

A natural hot spring from a private source drilled on-site. The source is used without adding water, providing a smooth and easily warming sensation. The indoor bath also features a high-concentration carbonated spring expected to promote blood circulation, with the fine carbonated bubbles adhering to the skin offering a pleasant feeling. The carbonated spring is considered effective for promoting blood circulation, relieving fatigue, and improving cold sensitivity. After achieving a state of perfect relaxation with the sauna and cold plunge bath, soaking leisurely in the natural hot spring continues to warm your body from the core.

Sauna

High-Temperature Sauna

100°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Capacity20people

Men's

A high-temperature sauna installed in the large public bath. Aromatic auto löyly is performed regularly, enveloping the room with a heat wave. Ideal for those who find regular saunas insufficient or want to sweat more. The convection stove heats the sauna stones, providing a balanced sweating experience with humidity and heat. In the spacious area, you can thoroughly warm your body while sitting comfortably. After the sauna, an ideal flow leads you to a deep cold plunge bath.

Cold Bath

Cold Bath

16°C

Water QualityNatural Water (Groundwater, Spring, etc.)

Capacity8people

Men's

Uses natural underground water, offering a soft and refreshing water quality. Located right next to the sauna room, it allows you to quickly cool down your body heated in the high-temperature sauna. Its depth allows you to immerse your head fully, experiencing a coldness that envelops your entire body.

Business Hours

Monday
10:00〜23:00
Tuesday
10:00〜23:00
Wednesday
10:00〜23:00
Thursday
10:00〜23:00
Friday
10:00〜23:00
Saturday
10:00〜23:00
Sunday
10:00〜23:00
Holiday
10:00〜23:00

Closed Days: None

Address

Musubimachi 3, Joso City, Ibaraki Prefecture

View on Google Maps

Website

https://www.oyumusubi.com/
Onsen & Spa Facilities (Super Sento, Sauna, Spa)

Gender Access

Gender Separated

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Tattoo Policy
OK if fully covered with designated stickers
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