I Looked Into Akazawa Day-Trip Hot Spring Hall

I've been gradually looking into not just camping spots, but also facilities for day-trip hot springs and hotel stays, and putting them together on this blog.

This time, I looked into "Akazawa Day-Trip Hot Spring Hall," which caught my eye while I was searching for hot spring facilities in the Izu area. What got me interested was the description of a large open-air bath with a view of the entire Pacific Ocean.

The Short Version

I got the impression that the facility is well-equipped, with a large open-air bath that lets you take in a full view of the horizon, plus indoor amenities like a manga lounge and a play lounge.
As for the signal, I wasn't able to confirm a rating using the official tool, so if you're concerned about it, it might be a good idea to check for yourself beforehand.

I've put together the details below.

What Kind of Place Is Akazawa Day-Trip Hot Spring Hall?

It's a day-trip hot spring facility located in Ito City, Shizuoka Prefecture, and it seems to be positioned as the day-use bathing facility within a larger resort complex known as Pleasure Resort Izu Akazawa Onsen. Apparently the hours are 10:00 AM to 10:00 PM (last entry at 9:00 PM), and I didn't find any mention on the official site of different hours by day of the week.

The pricing seems to be divided in detail depending on the season and time of day.

Weekdays 10:00 AM–6:00 PM: 1,400 yen for junior high school age and up, 700 yen for ages 4 through elementary school
Weekdays after 6:00 PM (night time): 1,000 yen for junior high school age and up, 500 yen for ages 4 through elementary school
Weekends and holidays 10:00 AM–6:00 PM: 1,700 yen for junior high school age and up, 1,000 yen for ages 4 through elementary school
Weekends and holidays after 6:00 PM: 1,300 yen for junior high school age and up, 800 yen for ages 4 through elementary school
Ages 0–3: free
During busy periods such as New Year's, Golden Week, and summer, weekend/holiday pricing applies

Apparently no reservation is needed for entry or for the free shuttle bus, so it seems like a place you can drop by on a whim. It also seems they can handle inquiries and reservations by phone.

Komorin

For someone as impulsive as me, a facility where you don't need a reservation and can just show up on the spot feels like really helpful information.

Checking Out the Large Open-Air Bath and the Indoor Amenities for Homebodies

The large baths are on the 3rd and 4th floors, and it seems men and women alternate floors by day. The main highlight is apparently the large open-air bath, where the Pacific Ocean and the horizon blend into one continuous view. The indoor bath area also seems to have a jacuzzi, a jet-equipped reclining bath, a waterfall shower bath, and a cold bath. Apparently there are two types of sauna: a dry sauna and a steam sauna.

It seems that the basic admission fee covers the 3rd and 4th floor large baths as well as the 1st floor area, while everything else falls into a paid area that requires an additional fee.

Warm bathing area (basement 1st floor, +500 yen): apparently newly added in 2026, designed as a space where you can slowly work up a sweat at a relatively low temperature of around 40 degrees Celsius
Ocean Lounging Lounge (2nd floor, +500 yen): apparently offers unlimited reading of around 6,000 manga and magazines, with a space designed around a forest and ocean theme. There's also apparently a kids' room attached
Play Lounge (basement 1st floor, +500 yen): seems to be a space where you can enjoy card games and board games

As a homebody myself, I was pretty intrigued by the idea of soaking in the hot spring and then paying extra to hang out in the manga lounge for a while. That said, since this area isn't included with just the basic fee, it seems worth keeping that in mind beforehand.

For meals, there's apparently a restaurant called Yura where you can eat while looking out at the ocean, offering rice bowls and set meals made with seafood from the Izu area. It also seems possible to use the restaurant just for dining without bathing. The gift shop apparently carries processed seafood products, sweets, and hot spring goods that are local specialties of Izu. There also seem to be a Thai traditional massage service and an esthetic salon on-site, so overall it left me with the impression that there's a fairly wide range of options for relaxing and taking a break.

I also came across information mentioning four private rooms with their own open-air baths, but I wasn't able to confirm details about pricing or how to book them on the official site. If you're interested, it seems more reliable to inquire directly by phone. Also, apparently starting in February 2025, entry is refused to anyone with tattoos (including body paint), so it might be a good idea to check on that ahead of time as well.

I also found some information suggesting there are seafood restaurants and cafes within walking distance, but since the source wasn't entirely clear, I'd recommend checking the latest information yourself if you plan to visit. It also seems that if you're willing to go a bit further, there are sightseeing spots like Mount Omuro and the suspension bridge at Jogasaki.

Rakuten Mobile Signal Conditions

When I tried checking this facility's location using the official "my Area Connectivity Simulation" tool, no result came up—instead, it looked like the tool was undergoing temporary maintenance. I tried a few times, but got the same result each time, so this time I wasn't able to check the signal conditions.

I couldn't give a clear result, but it didn't feel right to just guess, so I'm leaving it as is: I simply wasn't able to confirm this.

Komorin

This was the first time I've run into a situation where I couldn't get a signal reading, so it left me a bit puzzled. If you're planning to visit, it's probably safest to check the signal on your own device once you're there.

See Rakuten Mobile Details

Wrapping Up

To sum it up again, Akazawa Day-Trip Hot Spring Hall left me with the impression of being a day-trip hot spring facility notable for its large open-air bath overlooking the horizon of the Pacific Ocean, along with indoor amenities like a manga lounge and a play lounge. The convenience of being able to drop in without a reservation, combined with the clear division between areas included in the basic fee and those that aren't, seems like something worth knowing ahead of time so you're not caught off guard on the day.

I wasn't able to check the Rakuten Mobile signal this time, so if you're actually planning to visit, it's probably a good idea to check it yourself beforehand as well.

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