Natural Hot Spring Myojin-no-Yu

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Located in Adachi-ku, Tokyo, 'Natural Hot Spring Myojin-no-Yu' is a genuine natural hot spring facility featuring a rich and heavy sodium-chloride strong saline spring. The brownish strong saline spring, pumped from deep underground, fills the open-air bath, and the mineral aroma rising from the surface evokes the atmosphere of a hot spring area. The salt enveloping the skin retains body heat, and even after leaving the bath, the warmth continues to radiate from within, making it a 'hot water' bath. The sauna offers a dry sauna at approximately 90°C and a mist sauna using steam from the natural spring. The automatic löyly, activated every 20 minutes, weaves heat into the air, while the gentle spring mist envelops and warms the body deeply. Cooling down is achieved with a rock bath-style cold plunge bath set at about 14°C, providing a sharp contrast of hot and cold when returning to the strong saline spring.

Natural Hot Spring Myojin-no-Yu
📍
1-18-1 Oya, Adachi-ku, Tokyo
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Facility Name
Natural Hot Spring Myojin-no-Yu
Facility Type
Onsen & Spa
Address
1-18-1 Oya, Adachi-ku, Tokyo
Closed Days
None
Business Hours
Monday 09:00〜22:00
Tuesday 09:00〜22:00
Wednesday 09:00〜22:00
Thursday 09:00〜22:00
Friday 09:00〜22:00
Saturday 09:00〜22:00
Sunday 09:00〜22:00
Holiday 09:00〜22:00

♨️Hot Spring Information

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Rich Saline Spring
Natural Hot Spring
Utilizes a rich strong saline spring rising from deep underground. Due to its iron content, the water has a brownish hue, and the unique mineral aroma rising from the surface evokes a 'genuine hot spring area.' The salt forms a film on the skin's surface, maintaining its heat-retaining effect, so the warmth remains in the body's core even after leaving the bath, making it a 'hot water' bath. The water feels soft on the skin, and the minerals in the water refine the skin texture, leaving a moist feeling after bathing. In the open-air bath, the spring flows like a waterfall, allowing you to experience the powerful essence of natural hot springs with all your senses.

Sauna & Cold Bath Information

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High-Temperature Dry Sauna
Male
90°C
A dry sauna with a room temperature of about 90°C, equipped with an automatic löyly that activates every 20 minutes. The aromatic steam promotes sweating, and the tiered seating allows you to feel the heat from your core.
Sauna Type
Dry Sauna
Stove Type
Convection Stove (Sauna Stone)
Capacity
25people
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Natural Spring Steam Bath (Mist Sauna)
Male
50°C
A mist sauna using steam from the natural spring, set at a temperature of approximately 45-50°C. The fine steam and the aroma of the spring envelop the body, gently promoting sweating with moist heat.
Sauna Type
Mist Sauna
Stove Type
Built-in Stove
Capacity
10people
❄️
Cold Bath
Male
14°C
Soft water is cooled with a chiller, and the water temperature is set at about 14°C. Using 2.5 tons of cold water in a rock bath style, it is ideally suited for cooling down immediately after the sauna.
Water Quality
Soft Water