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Onyado Nono Asakusa Bettei

天然温泉 凌天の湯 御宿 野乃浅草別邸てんねんおんせん りょうてんのゆ おんじゅく の乃あさくさべってい

Lodging
Kanto·Tokyo

Day Use

Yes

Available for guests staying at Dormy Inn EXPRESS Asakusa

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Sauna room of any kind

Cold BathYes

Cold water plunge bath, typically used after sauna

Policies & Services

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels to rent or borrow at the desk

浅草観音温泉

Asakusa Kannon Onsen

Operated by · 株式会社共立メンテナンス

Chloride
+ Bicarbonate
Color
pale brown and clear
Taste
tasteless
Odor
odorless

Sodium-Magnesium Chloride-Bicarbonate spring

pH 8.2Weakly alkalineHigh silica
Composition fingerprint1.1 g/kg dissolved · Hypotonic
Na⁺62
Mg²⁺20
Cl⁻60
HCO₃⁻35
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Smooth skindry, rough skin
  • Cutsminor wounds

A sodium-magnesium chloride cold-mineral spring, with bicarbonate softness layered in. Weakly alkaline and soft on the skin, it carries a faint brown tint with rising bubbles at the source. With 64 mg/kg of metasilicic acid it leaves a thin silica film that sits in the Japanese beauty-water family. As a cold-mineral source under 25 °C, it is heated for bathing.

Sampled at wellhead·Analyzed May 31, 2019·公益財団法人 中央温泉研究所·Cert no. 14健地衛第1号

Explore the water

Highlights

Utaseyu
Jet Bath

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4.0

1 review

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Sergey M
1 year ago· edited

439. Onyado Nono Asakusa Bettei, Tokyo ★★ I stayed one night, and didn’t use any facilities except the onsen. It’s in Asakusa, very close to Sensoji. Inside, the format feels like a ryokan cosplay hotel. At first it feels a bit strange, but then it feels normal and comfortable. The onsen is similar in format, an upgraded onsen from Dormy Inn business hotels, but with black water, which changes the impression. The bath photos are from the internet, and they match. It’s the older brother of the neighboring Onyado Nono Asakusa, which does not have Bettei, the name and facades are similar, but these are really different properties. If comparing it with plain Nono, Nono Bettei is better, the baths are more varied, the room is better, but the price is often higher, though not always. There is no standard day-use option, but day-use access is possible if staying at Dormy Inn EXPRESS Asakusa. 1. Indoor area. It’s easy to breathe. 1.1. Main bath. The water is cloudy black. Temperature 41-42. 1.2. Two reclining jet baths, clear water. 1.3. Utaseyu. 1.4. Sauna. 1.5. Cold bath. 2. Outdoor area. It is on a fully enclosed balcony. 2.1. Small bath with black water, temperature 42. 2.2. Single bath with clear water, temperature 39-40. 2.3. Single bath with clear water, temperature 42-43. Because of the price and format, this place may be controversial, but it is still a real Tokyo hotel with an onsen, in a good location and with rare black water. An interesting option for staying. 19.01.2025

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Last updated September 18, 2026