Oku-Nasu Onsen, Nasu, Tochigi

Omaru Onsen Ryokan (Day-Use Onsen)

Omaru is a destination for a secluded mountain setting and an outdoor bath fed by a natural hot-spring stream. It is less practical for a low-budget, late-day or car-free visit than the three Shika-no-Yu-area inns.

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Property overview

Bath informationSeparate in-room baths from shared bathing facilities
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Staying at the ryokanCheck which facilities fit your plans

Bath information

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Spring & water temperature

Spring-source temperature
Exact temperature of the five-spring blend not published. Kawa-no-Yu alone was 36.8°C in a 2015 analysis.
Bathing temperature
Fixed bath temperatures not published
Spring source
A blend of five springs: Sakura-no-Yu, Naka-no-Yu, Kawa-no-Yu, Ai-no-Yu and Okunosawa Fukiage spring
Spring classification
Simple-spring family; individual springs have separate analyses, but the current main page does not publish one classification for the blended water
pH
Not published for the blend. Kawa-no-Yu alone was pH 7.5 in a 2015 analysis.
Flow rate
Not published for the blend. Kawa-no-Yu alone had a natural yield of 96.0 L/min in a 2015 analysis.
Water handling
The inn blends five of its own springs to adjust the temperature. Kawa-no-Yu is an outdoor bath made by damming a natural hot-spring stream and is described as 100% free-flowing spring water. The inn also describes its indoor bath as free-flowing. Day visitors cannot use the private Oku-no-Yu bath.
Analysis date
2015

Bathing indications

The inn lists fatigue, rheumatism, neuralgia and sensitivity to cold among its bathing indications. It also has a drinking-spring station; the listed indications are not a treatment guarantee.

Reception is 11:30–14:30, and bathing ends at 15:00. Admission is ¥1,300 for adults and ¥1,000 for children aged 3 through elementary school; a face towel and bathing garment are included. Check the monthly calendar for day-use dates. Outdoor baths may close in bad weather or for cleaning. Tattoos are not allowed.

Bath experience

Comfort
9.0/10
Bath variety
9.0/10
Upkeep
8.5/10
Atmosphere
10.0/10
Quiet
8.5/10
Access
5.0/10
Value
9.0/10

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Meals

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Location & access

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Oku-Nasu Onsen, Nasu, Tochigi

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