Looking into Atami no Iyashi Shin Kadoya
2026-10-02

I've been looking into campsites, day-trip hot springs, and places to stay bit by bit, kind of like a series. This time I picked a ryokan in Atami, Shizuoka, as a place that could work as a side trip for a hotel-staycation-style getaway.
This time I looked into Atami no Iyashi Shin Kadoya. I'm an indoor person, and what first caught my eye was that both dinner and breakfast are served in your room, so it seems like you could stay in your room the whole time. The “Ikkyaku Ittei” style, where every room has a different design, also piqued my interest.
The “Ikkyaku Ittei” guest rooms, each with its own design, and the in-room dining for both dinner and breakfast seemed to be the big draws of this ryokan.
As for Rakuten Mobile, the official tool gave it the top rank, “AAA.”
I've put the details below.
What Kind of Place Is Atami no Iyashi Shin Kadoya?
It's a hot spring ryokan in Atami, Shizuoka, and the catchphrase on the official site is apparently “an authentic Japanese-style ryokan with its own private hot spring source.” Besides overnight stays, it seems they also accept day-trip bathing.
Reservations can apparently be made through the online booking on the official site or by phone, and I also saw a note about a best rate guarantee for online bookings. For groups, they ask that you get in touch with them directly.
Here's the basic info, as far as I could confirm on the official site.
- Location: Atami, Shizuoka
- Approximate rates: per person with two guests sharing (tax included), Soo-tei from ¥29,700, Kaiyu-tei from ¥31,900, Kaishin-tei from ¥22,000, Takasago from ¥26,400, and Taketori from ¥26,400. The special room “Hikari” is by inquiry only
- Day-trip bathing: ¥1,800 per person (tax included), which apparently includes the rental of one bath towel
- Parking: free for up to 40 cars, according to the site
- How to book: online booking on the official site, or by phone
On the other hand, I couldn't find the check-in and check-out times on the pages I looked at. If you're curious, it might be safest to check the official site or ask the ryokan when you book.

A place with its own hot spring source, and in-room dining on top of that. Even for someone like me who isn't great at going out, it looked like a pretty reassuring combo.
Peeking into the “Ikkyaku Ittei” Rooms, Each with Its Own Look
According to the official site, every room here has a different design in the “Ikkyaku Ittei” style, and each room has a moon-viewing deck. The rooms page seems to list 18 rooms in total across 6 types (Hikari, Soo-tei, Kaiyu-tei, Kaishin-tei, Takasago, and Taketori).
However, the hot spring page also says there are 19 guest rooms, so the room count is inconsistent within the official site. As far as I could tell, I couldn't determine the exact number.
It seems there are also room types with a private open-air bath.
- Special room “Hikari”: apparently a maisonette-style room with a private pool
- Soo-tei: apparently has an open-air bath made of Shigaraki ware
- Kaiyu-tei: apparently has a cypress open-air bath
- Taketori: apparently has a cypress open-air bath
The in-room open-air baths are described as using free-flowing hot spring water straight from the source. As an indoor type who wants to relax in my room, that's a feature I'm definitely curious about.
Checking Out the Private Hot Spring and the In-Room Kaiseki Meals
The hot spring is apparently their own source, called “Hirato no Yu,” which is said to well up from the Hirato Tenman-gu Shrine on the grounds. The site lists the water temperature as 59 degrees Celsius and the flow rate as 95 liters per minute. The spring type seems to be a calcium-sodium chloride spring (hypotonic, mildly alkaline, high temperature).
For the large public baths, the men's bath is called “Tenjin no Yu” and the women's is “Hirato no Yu,” and apparently both have an indoor bath and an open-air bath. The large baths use their own source water, but there was a note saying they use a circulation and filtration system. The gender-separated “Sky Open-Air Bath” is described as free-flowing from the source.
As far as I could confirm, I couldn't find the bathing hours for the large baths or whether there are private baths you can reserve.
For meals, dinner is a Japanese kaiseki course and breakfast is a Japanese-style breakfast, and both are served in your room, apparently. There also seem to be special dishes using spiny lobster and abalone. They apparently also have an original junmai ginjo sake called “Shin Kado Sake.” I couldn't confirm the serving times for dinner and breakfast.
Rakuten Mobile Signal Conditions
Since I use Rakuten Mobile, this is something I wanted to know, so I checked. I entered this facility's location (Atami) into the official “my Area connectivity simulation” and ran it, and the overall rating came back as “AAA.”
According to the official tool, the signal looked like it should be good. That said, the result is only a simulation. It can't tell you about the actual situation inside the building or in a particular guest room. If you're curious, please try the official Rakuten Mobile tool yourself as well.

Seeing the top rank, “AAA,” was reassuring. At a place where you spend a lot of time holed up in your room, a good connection really matters.
Access and Day-Trip Bathing from a Non-Driver's Point of View
For access, it's apparently about 2 km from Atami Station (around 8 minutes by taxi) and about 1 km from Kinomiya Station (around 5 minutes by taxi). I have a license but don't drive, so being a short taxi ride from a station sounded helpful.
On the other hand, I couldn't find the walking time, local bus info, or whether there's a shuttle bus on the official site. For those coming by car, it seems they list routes from the Tokyo area via the Tomei Expressway, Atsugi IC, the Odawara-Atsugi Road, the Manazuru Road, the Atami Beach Line, and so on.
They apparently also offer day-trip hot spring use, and here are the details.
- Hours: 13:00 to 16:00
- Bathing fee: ¥1,800 per person (tax included, with one bath towel rental)
- Sky Open-Air Bath: only 15:00 to 16:00, for an additional ¥1,000 (tax included)
- Room rest plan: reservation required, from 2 people. Bathing plus a room rest is ¥6,200, or ¥7,850 with a soba lunch box (both tax included)
- Wednesdays: it said room rest only
I couldn't confirm whether advance reservations are needed for day-trip bathing or what the regular closing days are. It'd probably be a good idea to check the official site (https://shinkadoya.jp/) before you visit.
Wrapping Up
To sum it up, my impression of Atami no Iyashi Shin Kadoya is that it's a hot spring ryokan with its own private source, where every room has a different “Ikkyaku Ittei” design and you can enjoy both dinner and breakfast in your room.
Some rooms come with an open-air bath, so it seems like you could enjoy spending time without ever leaving your room. There also seem to be day-trip bathing and room rest plans, so there look to be options besides staying overnight.
As for Rakuten Mobile, the official tool showed “AAA.” There were some things I couldn't confirm, like the difference in the stated room counts and the check-in time. When you visit, it might be safest to check directly with the official site or the ryokan.
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