Akazawa Onsen

赤沢日帰り温泉館あかざわひがえりおんせんかん

Bathing Complex
Chubu·Shizuoka

Day Use

Yes

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Up to two stickers (11cm x 20cm)

Water treatment

from Article 18 disclosure
  • Added water
    Yes
  • Reheated
    Yes
  • Recirculated
    Yes
  • Disinfected
    Yes
    塩素系薬剤
  • Bath additives
    Not disclosed

対島76号

Tsushima No. 76 Spring

Operated by · 赤沢日帰り温泉館

Chloride

A sodium chloride spring rising at seaside Akazawa in Ito. With total dissolved solids of 19.90 g/kg it is a hypersaline strong-salt source exceeding ocean salinity, leaving a mineral film on the skin and retaining warmth well after the bath. It is weakly alkaline and soft on the skin. As the source emerges at 35.5 °C, the water is reheated for bathing.

Source temperature
35.5°C
Warm
Tonicity
Hypertonic
 
Free CO₂
6.50mg/kg
Low
Highlights
  • Strong salt

Analyzed May 24, 2022·一般財団法人静岡県生活科学検査センター

Views

Sea
Mountains

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NH
Nadya Ho
2 months ago

Akazawa Day-Use Onsen Hall I visited on a rainy day, so the ocean view from the infinity onsen didn't fully reveal its amazing potential. Nevertheless, both the onsen itself and the view were very impressive. There are no longer private baths after renovation; the men's and women's floors alternate by day. I was surprised that the water was salty. All baths, both indoor and outdoor, were comfortably warm. Inside the onsen, there were two small stone baths, one with green tea and the other with mandarin. There were very few visitors (we went midweek), and I spent a long time alone in the infinity onsen. There is a sauna with a huge window overlooking the ocean and a cold bath at the exit. We purchased the most expensive option, which included towel rental, bath clothing, and lounge access. The lounge is great—lots of spots and nooks to relax, read manga, or nap. There is a large selection of manga and magazines. There is also a children's corner. Entry is via badge everywhere; you cannot pay extra for lounge access on-site as there is a turnstile and no staff. So, it's better to buy the correct tickets at the entrance. Payment is only through a machine, which is only in Japanese—we used Google Translate, and everything was clear. We also had lunch at the restaurant—excellent, fresh fish. Orders are placed via badge, and payment is made at the exit via a machine. I really liked it—the design is cool, and there were very few people. We took a free shuttle from Izu-Kogen there and returned directly to the hotel by local bus (seems it continued to Ito). The schedule is like in a real countryside (see photo), but the empty bus arrived on time. I really want to visit again on a clear day 🙏

SM
Sergey M
1 year ago

241. Akazawa Onsen Day Spa, Izu An incredibly powerful onsen complex with infinity onsen baths and a mind-blowing view of the bay and coastline. Entry costs 1600–2000, open from 10:00 to 22:00. There's a bus from the nearest station. I arrived right at opening, but there were already visitors in the bath — apparently hotel guests get in earlier. Inside there's a restaurant, chill zones, a shop, massages, and private baths with rooms for 3500–4500 (didn't take them). There are two infinity baths — on the 3rd and 4th floors. They rotate daily. I went on the day when the 3rd floor was open. Online photos match (though the photos don't even come close to capturing how amazing the view is in person). 1. Outdoor infinity bath on the 3rd floor with a top-tier view of the bay and coastline. Clear water, temperature 40. 2. Indoor infinity bath, but the glass had slight fogging, which doesn't give the full view. Clear water, temperature 40. Comfortable to breathe. 3. Inside there are two tubs with greenish water, temperature 38. 4. Sauna. 5. Steam bath. An absolutely amazing place, superb view, great onsen. Need to come back to try the second infinity onsen on the 4th floor and a couple of private baths. Maybe even stay overnight.