Ibaraki Joso City
Joso ONSEN & SAUNA Oyumusubi
Joso's healing resort with one of the largest sauna areas in the Kanto region and natural hot springs
- Tattoos may be permitted
- Natural Hot Spring
- Sauna Available
- Natural water cold bath
- Cold Bath Available
About Joso ONSEN & SAUNA Oyumusubi
"Joso ONSEN & SAUNA Oyumusubi" is a day-trip hot spring facility in Joso City, Ibaraki Prefecture. Its biggest draw is one of the largest sauna areas in the Kanto region, where men and women can enjoy the experience together in swimsuits. From a large projector-equipped sauna to a rentable log-house-style sauna and a steam sauna, there are 8 unique rooms to choose from. The first-floor main bath, where guests relax in the nude, is also equipped with an auto aroma löyly sauna, and the natural underground water cold plunge bath provides a crisp cooldown. Finish off with the silky alkaline natural hot spring or the high-concentration natural carbonated spring, both of which warm you from the inside out. There is also a restaurant with plenty of sauna meals and a relaxation area, so you can refresh to your heart's content amid the rural landscape.
Hot SpringONSEN
Main Bath
An open-air bath lavishly using the facility's own spring, drilled on the premises. This alkaline natural hot spring has an extremely soft feel and gently wraps around the body. After bathing, a refreshing sensation lingers, and you can feel your skin becoming smooth and refined. It is a blissful bathing space where you can take in nature's blessings with your whole body while feeling the fresh outdoor air.
High-Concentration Natural Carbonated Spring
A luxurious indoor bath that blends a high concentration of carbon dioxide into natural hot spring water. Fine carbonated bubbles envelop the whole body and gradually warm you from the core. The heat-retaining effect is strong, and the warm feeling after bathing lasts for a long time. Through the synergistic effect of the hot spring ingredients and carbon dioxide, you can feel your daily fatigue slowly melting away.
Main BathSauna
Auto Aroma Löyly Sauna
This dry sauna features auto löyly using aroma water every hour. The calm interior fills with a pleasant fragrance, drawing out a thorough sweat from head to toe. After the sauna, head straight to the natural underground water cold plunge bath in the open-air area, then enjoy a deep relaxing time while feeling the breeze from the foot bath and totonou chairs in the outdoor-air bath space.
Main BathCold Bath
Open-Air Cold Plunge Bath
A cold plunge bath set in the open-air area and filled with natural underground water. Its soft feel on the skin is a hallmark of the groundwater, gently yet effectively tightening a heated body. With both shallow and deep sections, you can enjoy a refreshing cooldown that envelops your whole body at the depth you prefer.
Co-edSauna
Emu Musubi
The hall sauna with the largest space in the facility. Large windows overlook peaceful rural scenery, letting you relax in a spacious, open atmosphere. It is also recommended for lying down and warming your whole body evenly. During events using the large-screen projector, the heat and sense of unity become even stronger, creating a special sauna experience.
Honoo Musubi
A sauna with a distinctive black interior and a heavy, powerful atmosphere, offering the strongest heat in the second-floor area. In this thoroughly heated space, it encourages a satisfying sweat even in a short time. A cold plunge bath is placed just outside the sauna room, creating a classic, perfectly planned flow that rapidly cools a body heated to the limit.
Mori Musubi
A log-house-style sauna wrapped in the warmth of wood. It can be rented for private use, allowing you to immerse yourself in sauna time without worrying about the people around you. You can also enjoy whisking, where the scent of plants and pleasant stimulation bring deep relaxation. When not reserved, it is open to the public, offering the soothing feeling of being in a quiet forest.
Mushi Musubi
A steam sauna that combines powerful steam with a blower. The rich aroma of spices and herbs fills the room, and every breath brings a greater sense of comfort. You can also cool only the surface of your body by pouring cold water over yourself indoors, extending your stay without letting the heat at your core escape. It is a place to warm up slowly and comfortably, maximizing totonou.
Wabi Musubi / Masu Musubi
A compact sauna equipped with a drink counter. While enjoying the beverages you brought with you, you can sweat at your own pace. If you open the small window, you can watch the events taking place in the adjacent Emu Musubi, letting you enjoy both sauna and entertainment at once with the special feeling of sitting in a VIP seat.
Tsuy Musubi
A bright, clean sauna based on white wood. It features semi-private seating and bench seats, with a design that takes privacy into consideration so you will not meet the gaze of the person opposite you. It is a comfortable space where you can forget about the world around you, slip into your own world, and quietly face the heat.
Rin Musubi
A sauna characterized by tiered box seating. Since partitions are installed, you can immerse yourself in the sauna with a semi-private feel. The perceived temperature changes depending on where you sit and which tier you choose, making it easy to select the ideal heat level according to your condition and preferences that day. It is a special seat just for you, where you can savor a quiet session of sweating.
Co-edCold Bath
Sauna Area Cold Plunge Bath / Outdoor-Air Bath
A natural underground water bath located at the center of the sauna area. It instantly cools the heat that has risen to the limit in the sauna and awakens a clear sensation. The mellow water quality, unique to groundwater, blends pleasantly with the skin and greatly enhances the quality of alternating hot-and-cold bathing with the sauna. Together with the adjacent cool room, you can enjoy a blissful cooldown.
Facility Information
- Address
- 3 Musubi-machi, Joso City, Ibaraki Prefecture
- Business Hours
- 10:00〜23:00
Irregular Holidays
- Closed Days
- Irregular Holidays
- Gender Access
- Gender Separated
- Tattoo Policy (Communal Bath)
- OK if fully covered with designated stickers
Guests are allowed entry if they have a single-point tattoo that can be covered by one store-designated cover seal sold at the front desk (114 mm x 200 mm).
- Official Website
- View official site
Access
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JAPAN'S FINEST ONSEN & SAUNA
The Finest Onsen & Sauna in Japan
61 SELECTIONS
Only the 61 places worth returning to.
Most of what we surveyed never even made it onto this site. This book is a further cut from what did. Our editor bathed in every onsen and sauna in it, and wrote only what they confirmed on the ground.