Asahi-yu Gensen Yuiru

⚠️No Tattoos

Asahi-yu Gensen Yuiru is a bathing facility located in the Hamakawasaki area of Kawasaki City, Kanagawa Prefecture, featuring two types of saunas, a deep cold plunge bath, and a natural hot spring sourced from its own well. The saunas offer a high-intensity sweating experience through auto löyly/aufguss, while the cold plunge bath provides a cool-down with water around 13°C. The hot spring uses a black water type natural source, primarily flowing directly from the source, characterized by its smooth texture on the skin and a lingering warmth after bathing. Tattoos (including ink and stickers) are generally not allowed, but events called "TATTOO DAY" or "TATTOO OK DAY" are held regularly, and those with tattoos should check the official Instagram for event dates. It is a facility where you can enjoy bathing, relaxation, and dining all in one day.

Asahi-yu Gensen Yuiru
📍
3-1-2 Kokan-dori, Kawasaki-ku, Kawasaki-shi, Kanagawa
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Facility Name
Asahi-yu Gensen Yuiru
Facility Type
Onsen & Spa
Address
3-1-2 Kokan-dori, Kawasaki-ku, Kawasaki-shi, Kanagawa
Closed Days
None
Business Hours
Monday 11:00〜00:00
Tuesday 11:00〜00:00
Wednesday 11:00〜00:00
Thursday 11:00〜00:00
Friday 11:00〜00:00
Saturday 10:00〜00:00
Sunday 10:00〜00:00
Holiday 10:00〜00:00

♨️Hot Spring Information

♨️
Kawasaki Asahi-yu Onsen
Natural Hot Spring
Flowing
The non-heated natural source water is primarily used as a free-flowing bath, with its rich components blending with the skin to warm the body to the core. It provides a lasting warmth after bathing and a smooth skin texture. The color of the water changes with the time of day, allowing visitors to enjoy the charm of a 'living hot spring.'

Sauna & Cold Bath Information

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Löyly Sauna
Male
95°C
With an overwhelming amount of auto löyly, high-temperature steam spreads quickly, and the sauna stones are abundantly stacked to enhance heat efficiency. The compact design prioritizes heat circulation, providing a dense sweating experience that impresses sauna enthusiasts.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
12people
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Aufguss Sauna
Male
80°C
Specialized for aufguss, this large space features three-tiered benches, with two tower stoves generating auto löyly every 20 minutes. The hourly aufguss is enhanced with music and aroma performances, elevating the immersive heat wave show experience.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
20people
❄️
Amber Submersion Cold Plunge Bath
Male
13°C
The men's bath has a two-tier structure with water depths of 120cm and 150cm, maintaining cold water at 13°C to rapidly lower body temperature. The full-body cold stimulation awakens the sympathetic nervous system, leading to a powerful reset feeling through the sauna→cold plunge bath→outdoor air bath cycle.
Water Quality
Tap Water