YudokoroYunohana

Japan's finest carbonated spring, natural free-flowing Nagayu Onsen

Oita Taketa City

Yudokoro Yunohana is a day-use bathing facility attached to the ryokan Kajikaan in Nagayu Onsen, Naoiri, Taketa City, Oita Prefecture. It offers the magnesium-sodium-calcium bicarbonate spring that has been called Japan’s finest carbonated spring, delivered as a completely natural free-flowing source with no water added, no reheating, no recirculation, and no disinfection. Using a bottom-fill, bottom-drain method that preserves the spring’s components, visitors can experience the fresh water as it emerges from the source. Both the men’s and women’s baths include a sauna and a cold plunge bath, and after cooling down you can enjoy a relaxed totonou (state of perfect relaxation) in the famed hot spring. The facility is a full-scale onsen inn with bedrock baths, private family baths, overnight accommodations, and a restaurant.

Hot Spring & Bath Information

Bath

TypeNatural Hot Spring

Flow-through

The source is called Kajika no Yu. It is a magnesium-sodium-calcium bicarbonate spring (bicarbonate-rich, earth-alkaline spring) with a source temperature of about 46°C and a natural flow of 250 liters per minute. The water is supplied as a pure free-flowing spring with no water added, no reheating, no recirculation, and no disinfection. The bottom-fill, bottom-drain method prevents loss of bicarbonate components and oxidation of iron, allowing you to enjoy the freshly gushing water. The white mineral flakes that float on the surface are evidence of the spring’s abundant minerals. This famed hot spring is known to promote blood circulation and is said to be effective for neuralgia and digestive ailments.

Sauna

Self-löyly Sauna

85°C

Sauna TypeDry Sauna

Stove TypeConvection Stove (Sauna Stone)

Men's

A dry sauna located on the men's side. Designed for alternating hot-and-cold bathing combined with Nagayu Onsen’s famous spring, the layout allows smooth movement through the bathing area. The calm interior promotes a deep sweat. After the sauna you can soak in the free-flowing bicarbonate spring and enjoy a leisurely totonou experience unique to an onsen inn.

Cold Bath

Cold Bath

20°C

Water QualityNatural Water (Groundwater, Spring, etc.)

Flow-through
Men'sWomen's

A cold plunge bath for cooling the body after the sauna. True to Nagayu Onsen inns, it is compact yet comfortable, supporting the alternating hot-and-cold bathing between sauna and onsen. In winter, the outdoor bath, which can have a reduced flow and lower temperature, is sometimes recommended as an alternative to the sauna’s cold plunge bath, a charming practice characteristic of hot spring resorts.

Business Hours

Monday
10:00〜22:00
Tuesday
Closed Days
Wednesday
10:00〜22:00
Thursday
10:00〜22:00
Friday
10:00〜22:00
Saturday
10:00〜22:00
Sunday
10:00〜22:00
Holiday
10:00〜22:00

Closed Days: Tuesday

Address

2961 Nagayu, Naoiri, Taketa City, Oita Prefecture 878-0402, Japan

View on Google Maps

Website

http://www.kajikaan.com/spa.html
Onsen & Spa Facilities (Super Sento, Sauna, Spa)

Gender Access

Gender Separated

❓
Tattoo Policy
Unknown (Please Check)
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