Sauna and Natural Hot Spring Jonnobi-kan
Sauna and Natural Hot Spring Jonnobi-kan is a day-use hot spring facility located in Nishikan Ward, Niigata City, Niigata Prefecture. It features 100% natural hot spring water from Fukuju Onsen, with two distinct bath areas, Heike Hotaru no Yu and Genji Hotaru no Yu, which can be enjoyed on alternating days. In addition to a variety of saunas including a herbal steam sauna and a rocky sauna, you can achieve a state of perfect relaxation with a cold plunge bath using 100% natural water from Mount Kakuda. The facility also includes a dining area and relaxation services, and the staff's heat wave events held every weekend are popular. In front of the facility, you can enjoy the sight of Genji fireflies dancing in Hotaru no Sato Park in June, allowing you to fully enjoy a nature-immersed bathing experience all day long.
Facility Name
Sauna and Natural Hot Spring Jonnobi-kan
Facility Type
Onsen & Spa
Address
4067 Fukui, Nishikan-ku, Niigata City, Niigata Prefecture
Website
Closed Days
None
Business Hours
Friday 10:00〜22:00
Monday 10:00〜22:00
Sunday 10:00〜22:00
Holiday 10:00〜22:00
Tuesday 10:00〜22:00
Saturday 10:00〜22:00
Thursday 10:00〜22:00
Wednesday 10:00〜22:00
定休日 第1水曜日、第3水曜日
Tattoo Policy
🏷️ Allowed if Covered
♨️Hot Spring Information
♨️
福寿温泉
Natural Hot Spring
Using 100% natural hot spring water from Fukuju Onsen, which springs from underground. The water is soft to the touch and features a skin-friendly quality. The warmth of the hot spring gently relaxes the body tightened by the sauna and cold plunge bath. There are two distinct bath areas, Heike Hotaru no Yu and Genji Hotaru no Yu, which can be enjoyed on alternating days. With a variety of baths such as indoor baths, open-air baths, and pot baths, each with different temperature ranges, you can enjoy a leisurely soak. After bathing, your body is warmed from the core, making it difficult to catch a chill.
Sauna & Cold Bath Information
🔥
[Heike Hotaru no Yu] Dry Sauna
Male
100°C
The lower tier is designed for beginners to enter slowly, while the upper tier is hotter, and wearing a sauna hat is recommended. The dry heat envelops the body, allowing you to sweat thoroughly. The seating area is spacious, allowing you to relax and face the heat. With different temperature zones available due to the tiered seating, you can adjust your sweating pace. There is no TV or background music, allowing you to achieve a state of perfect relaxation in a quiet space.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
10people
🔥
0[Heike Hotaru no Yu] Steam Sauna
Male
The 'Herbal Steam Sauna' uses dried local wild herbs steamed with high-temperature steam. This unique experience is appealing to the sense of smell, with the fragrance of wild herbs enveloping the body. The elevated floor increases the perceived temperature, inspired by 'Sauna Shikiji.' The water droplets falling from the ceiling are a distinctive feature, drawing out sweat thoroughly. The room is filled with gentle steam, making it comfortable even for beginners. You can relax with deep breaths, and the scent of wild herbs soothes fatigue.
Sauna Type
Herb Sauna
Stove Type
Built-in Stove
Capacity
6people
🔥
[源氏蛍の湯]森のサウナ
Female
85°C
The 'Rocky Sauna' features stones piled like a mountain. The heat source is gas, with heat pipes running under the seating to evenly warm the entire body. An automatic löyly occurs every 3 minutes, and self-löyly is also possible, allowing you to adjust the heat to your preference. The large window at the front offers a scenic view, providing a sense of unity with nature. The soft heat and moderate humidity are comfortable, making it an attractive temperature range for long, leisurely sessions.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
12people
🔥
[源氏蛍の湯]ドライサウナ
Female
100°C
A high-temperature dry sauna with a dry atmosphere. The temperature can reach up to 110°C at its highest, with intense heat coursing through the body. The low humidity allows for quick sweating, enabling you to sweat profusely in a short time. The heat is strong enough to recommend wearing a sauna hat, making it designed for advanced users. The compact room circulates heat well, making it ideal for sauna enthusiasts who want to focus on achieving a state of perfect relaxation. By alternating with the forest sauna, you can enjoy different heat experiences.
Capacity
6people
❄️
[Heike Hotaru no Yu] Cold Plunge Bath
Male
13°C
The cold plunge bath is located between the dry sauna and steam sauna. The water temperature ranges from 12 to 17°C, making it a suitable temperature even for those who are not fond of cold baths.
Water Quality
Tap Water
❄️
[Genji Hotaru no Yu] Forest Sauna Cold Plunge Bath
Female
13°C
A luxurious cold plunge bath using 100% natural water from Mount Kakuda. Even in summer, the water temperature is around 15°C, and in winter, it is a crisp 9°C, with a reputation for its soft texture. The constant flow ensures fresh water is always available, enveloping the body in the refreshing sensation unique to natural water. It rapidly cools the body heated in the forest sauna, and the softness of the natural water is pleasantly soothing. You can experience a deep cool-down while feeling the blessings of nature on your skin.
Water Quality
Groundwater
✓ Flow-through
❄️
[Genji Hotaru no Yu] [Indoor Bath] Cold Plunge Bath
Female
16°C
A cold plunge bath installed in the indoor bath. The moderate coldness cools down the body.
Water Quality
Tap Water