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Ryuoh Radon Onsen Yutopia" ranked first in Japan for its excellent hot water Renewal opening & award-winning commemorative campaign starts!


Yutopia Corporation (Location: Kai City, Yamanashi Prefecture; Representative: Yoshiteru Hayakawa) will reopen on February 9, 2024 (Friday) as a more attractive facility after undergoing renovation work that began in November 2023. In addition, to commemorate the fact that it was awarded the first prize in the "Nifty Onsen Ranking 2023" in the "Good Hot Spring" category, the second prize in the "Health Promotion" category in the "General Election of Onsen Inns and Hotels 2023", and the first prize in the Chubu area, the "Onsen Trip 500 yen Campaign 3rd Stage" will start on February 14, 2024 (Wednesday). The campaign will start from February 14, 2024 (Wednesday).

URL of "Ryuoh Radon Onsen Yutopia":

Campaign page URL:

Ryuoh Radon Onsen Yutopia" Renewal Opening

The "Ryuoh Rebirth. Renewal opening of "Ryuoh Radon Onsen Yutopia!

Located in Kai City, Yamanashi Prefecture, where you can enjoy seasonal scenery, "Ryuoh Radon Onsen Yutopia" offers pure hot spring water that is 100% free-flowing, which has been selected as one of the "100 best hot springs in Yamanashi", meals using local ingredients, French-style aromatherapy, and other services designed to heal the body and mind. We offer services designed to heal the body and mind.

From October 2, 2023 to early February 2024, the ryokan will reopen on February 9, 2024 (Fri.) after renovations to the exterior walls, large bath, 1st floor lobby, 2nd floor restrooms, and guest rooms, in pursuit of further customer satisfaction and safety! We will provide you with a space that combines the history of the ryokan with the comfort and functionality of modern times.

■Multiple awards received in various rankings and general elections!

▼Nifty Onsen Ranking 2023 ( )

Hot spring category - No. 1 in Japan

Lodging category: No. 8 in Japan

Hokuriku/Koshinetsu Area - No.3 overall

Yamanashi Prefecture 2nd overall

Nifty Hot Spring Hotel and Hotel General Election 2023 ( )

National ranking

Health promotion category 2nd place

Solo traveler category: 4th

Solo travel category - 2nd place

Access category 2nd place

Chubu Region Ranking

Health promotion category

Solo travel category

Solo travel category

Access category 1st place

Hot spring general election 2023 ( )

Health promotion category 2nd place

Commemorating the award! Onsen Ryoko Campaign 3rd Stage

To commemorate this award, we will sell 6 coupon tickets (regular price: 4,620 yen (including tax)) for the use of "Ryuoh Radon Onsen Yutopia" at the "Award Commemorative Price: 3,300 yen (including tax)" (550 yen per coupon (including tax)).

Expiration date: Wednesday, February 14, 2024 - Tuesday, December 31, 2024

Sales period: February 14, 2024 (Wed.) - December 31, 2024 (Tue.) *Sales will end when coupon tickets are sold out.

Let's Travel to Onsen (hot spring) for 500 yen!

Attractions of Ryuoh Radon Onsen Yutopia

Recognized as one of the "100 Best Hot Springs in Yamanashi

The Ryuoh Radon Onsen has been selected as one of the "100 Best Hot Springs in Yamanashi," a list of 120 facilities with hot springs that are full of individuality.

The hot spring is rich in individuality with various types of spring qualities, and has the most powerful therapeutic effects among the hot springs in Yamanashi, which has a high diversity of hot springs, and is one of the best in the country. This is a luxurious bath using natural hot spring water that is completely flowing.

Radon Onsen, the original hot spring that sucks in water

Radon hot springs are hot springs in which radon gas, kept at a safe constant concentration, is pumped into the bathtub. Radon works on cells throughout the body by being taken into the body through bathing or breathing, and promotes "cell activation," "promotion of natural healing power," "enhancement of metabolism," and "improvement of immunity. For this reason, radon hot springs are also known as "hot springs that breathe. Our facility uses a radon generator with a concentration of 87 machetes, which is also used for medical purposes, to provide safe and stable radon hot spring water at all times.

Promoting services based on the concept of "health care

We provide a synergistic effect that exceeds expectations by combining aromatherapy with hot-spring cure and radon therapy. In addition, we propose a "high-quality way of spending time that heals the body and mind" by combining "meals that make the most of local ingredients," "quad beauty baths with reduced water," "radon hot springs with the highest concentration in Japan," and "organic aromatherapy.

Large Bath (Renewal 1)

One of the largest radon generators

Outline of Ryuoh Radon Onsen Yutopia

Name: Ryuoh Radon Onsen Yutopia

Location: 1300-1 Tomitake-Shinden, Kai-shi, Yamanashi-ken 400-0113

Access : 8 minutes walk from Ryuoh Station

Spring quality: Sodium chloride and bicarbonate hot spring

Lodging: 11,000 yen per night for 2 meals (tax included), 6,600 yen per night with no meal (tax included)

Drop-in baths: 10:00-23:00, 770 yen (tax included) for adults, 660 yen (tax included) for children 12 years old and younger


YouTube : Yamanashi Hyakumeiyu "Ryuoh Radon Onsen Yutopia" Women's trip report

        Health Tourism PR "Yottekeshi! Real radon hot spring" (Japanese only)

        Inhale plenty of radon and feel the effects of a hot-spring cure!

        Ryuoh Radon Onsen Yutopia

Exterior (Renewal 1)

Entrance (Renewal 2)

Company Profile

Company name: U-TOPIA Ltd.

Location: 1300-1 Tomitake-Shinden, Kai-shi, Yamanashi-ken

Representative: Yoshiteru Hayakawa

Establishment : February 23, 1946

Capital : 10 million yen

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