Last admission is 21:00, an hour before the 22:00 closing time.
¥1,400
A cheaper night rate applies from 18:00: 1,000 yen for adults and 500 yen for children on weekdays, 1,300 yen and 800 yen on weekends and holidays. The Ocean Lounge, Play Lounge and Warm Relaxation Room are a paid extra area, plus 500 yen. Towel rental is 200 yen and yukata rental is 400 yen; children under 4 bathe free. Peak seasons (New Year, Golden Week, summer) are charged at the weekend-holiday rate.
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
Bathing Arrangements
Mixed BathingNo
Shared bathing area for all genders
Policies & Services
TattooWith Conditions
Allows entry with visible tattoos
Up to two stickers (11cm x 20cm)
KidsYes
Welcomes children and families
DiningYes
A restaurant or dining room open to visitors, not only meals for overnight guests
TowelsYes
Towels to rent or borrow at the desk
Rest AreaYes
Relaxation space for after bathing
The rest lounges (Ocean Lounge and Play Lounge) are a paid extra area, +500 yen on top of admission.
ParkingYes
On-site or nearby parking available
Water treatment
Treated and recirculated(partial disclosure)
from Article 18 disclosure
Added water
Yes
Reheated
Yes
Recirculated
Yes
Disinfected
Yes
塩素系薬剤
Bath additives
Not disclosed
塩
対島76号
Tsushima No. 76 Spring
Operated by · 赤沢日帰り温泉館
塩
Chloride
Strong salt
Known good for
Warmingcold sensitivity
Smooth skindry, rough skin
Cutsminor wounds
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.
Akazawa Onsen Day Spa is a large day-use bathhouse on the Izu coast, part of the wider Akazawa resort. The main open-air bath sits right at the edge of the water, so the horizon and the Pacific fill the view while you soak in natural hot-spring water. Indoors there's a jacuzzi, a reclining bath, and two kinds of sauna, including a mist sauna. A restaurant serves Izu seafood after your bath, and there's a souvenir shop and paid lounge areas with manga and board games if you want to make a day of it. Reviews mention the evening view over the water in particular, and describe the place as clean and calm rather than crowded.
Akazawa Onsen Day Spa
赤沢日帰り温泉館
I went on a rainy day, so the ocean view from the infinity onsen, of course, did not show its full amazing potential. Even so, both the onsen itself and the view from it were very impressive.
After the renovation, there are no more private baths, and the men’s and women’s floors alternate by day.
I was surprised that the water was salty. The temperature was comfortable everywhere, both inside and outside.
In the indoor part of the onsen, there were two small stone baths, one with green tea and the other with mandarin.
There were very few visitors, we went in the middle of the week, and I sat alone in the infinity onsen for quite a while.
There is a sauna with a huge window and an ocean view, and a cold bath at the exit.
We bought the most expensive option, with towel rental, bathwear, and lounge access. The lounge is great, with lots of seats and little corners to chill, read manga, and nap. There is a wide selection of manga and magazines. There is also a kids’ corner.
You go everywhere using a badge, and you can’t pay extra on the spot for lounge access, there is a turnstile there and no staff. So it’s better to buy the right tickets right at the entrance. Payment is only through a machine, and the machine is Japanese only, but we translated it with Google Translate, and everything was clear.
We also went to the restaurant for lunch, excellent fresh fish, ordering by badge, payment at the exit at the machine.
I really liked it, the design is great, and the fact that there were as few people as possible.
We went there on the free shuttle from Izu-Kogen, and on the way back we went straight to the hotel by local bus, it seemed to continue on to Ito. The timetable is like in a real inaka (in the photo), but the empty bus arrived on time.
I’d really like to come back in clear weather 🙏
241. Akazawa Onsen Day Spa, Izu ★★★
A very strong hot spring complex with infinity baths and an incredible view of the bay and coastline. Admission is ¥1,600-2,000, open from 10:00 to 22:00. There is a bus from the nearest station. I came right at opening, but there were already people in the bath, apparently hotel guests are let in earlier. Inside there is a diner, places to chill, a shop, massages, and private baths with rooms for ¥3,500-4,500, which I did not use.
There are two infinity baths, on the 3rd and 4th floors. They alternate on a daily schedule. I went on a day when access was to the 3rd floor. The bath photos online are accurate, although the sheer impressiveness of the view in person is not even close to captured by photos.
1. Outdoor infinity bath on the 3rd floor with a top-tier view of the bay and coastline. The water is clear, temperature 40.
2. Indoor infinity bath, but the glass had a little condensation, which does not make the view complete. The water is clear, temperature 40. Breathing is comfortable.
3. Inside there are two tubs with greenish water, temperature 38.
4. Sauna.
5. Steam bath.
An awesome place, amazing view, great onsen. I need to go again to try the second infinity bath on the 4th floor and a couple of private baths. Maybe stay overnight there too.
09.11.2024
