Hotel Sunvalley Izu-Nagaoka: The Hot Spring and Dinner Were Incredible

For this trip, I stayed at Hotel Sunvalley Izu-Nagaoka, well known for its combined men’s and women’s hot spring spanning roughly 1,000 square meters and a manga library with over 30,000 volumes, located in Izu, Shizuoka.

In this article, I’ll share my honest impressions and review of my stay at Hotel Sunvalley Izu-Nagaoka.

If you’re curious about staying at Hotel Sunvalley Izu-Nagaoka, or you’re hunting for a good hotel around Izu, this article should be a great fit for you, so stick around to the end.

Who Hotel Sunvalley Izu-Nagaoka Is a Great Fit For

There are over 30 hotels around Izu-Nagaoka in Shizuoka. Izu-Nagaoka is known for its colorless, odorless hot spring water at around 70°C, drawing plenty of travelers for both the hot springs and sightseeing.

This time I chose Hotel Sunvalley Izu-Nagaoka with golf around Izu-Nagaoka in mind, and after actually staying here, I’d say Hotel Sunvalley Izu-Nagaoka is a great fit for people who match the following:

• Want to visit Izu’s signature sightseeing spots like Izu Panorama Park and Joren Falls
• Want to relax in a wide variety of hot springs and open-air baths
• Want to play golf around Izu

Let’s go through each one.

First, people who want to visit Izu’s signature sightseeing spots like Izu Panorama Park and Joren Falls.

Izu Panorama Park has a 1,800m ropeway up to the summit of Mt. Katsuragi, where the view of Mt. Fuji and Suruga Bay draws huge crowds of visitors.

Hotel Sunvalley Izu-Nagaoka is only about 1km from Izu Panorama Park, just a 3-minute drive away, making it an ideal base if you want to visit.

Second, people who want to relax in a wide variety of hot springs and open-air baths.

Hotel Sunvalley Izu-Nagaoka offers a genuinely wide range of baths — bubble baths, jet baths, reclining baths, a large garden-style open-air bath, pot baths, and private baths — making it a dream for hot-spring lovers. And despite all that variety, the price is still remarkably reasonable.

Third, people who want to play golf around Izu.

Driving to Izu for golf from central Tokyo or the greater metro area involves a fair distance, so an early morning departure is often unavoidable. That makes staying the night before or after a round a common choice.

This time, Joe played a round at Izu International Country Club, about a 20-minute drive from the hotel. Staying the night before means you can relax in the hot spring and eat breakfast at a leisurely pace before heading out for your round. Staying after your round means you won’t reach the hotel until evening, so if you want to make the most of the hot spring too, staying the night before is the way to go.

Access to Hotel Sunvalley Izu-Nagaoka

Hotel Sunvalley Izu-Nagaoka is known for its open, hexagonal hot spring built entirely from Japanese cypress, along with one of Izu’s largest manga libraries. It’s about a 50-minute drive from the Numazu IC on the Tomei Expressway, or about an hour from the Nagaizumi-Numazu IC on the Shin-Tomei Expressway.

By train, it’s about a 15-minute free shuttle bus ride from Izu-Nagaoka Station, or about 40 minutes by free shuttle bus from Mishima Station. A hotel that runs a shuttle bus from the nearest station already makes a great impression.

Hotel Sunvalley Izu-Nagaoka Plans and Rates

Hotel Sunvalley Izu-Nagaoka is popular for its seasonal and local cuisine, open-air hot spring, and Japanese-style rooms (with private bathroom and free Wi-Fi). The plan I actually booked and stayed on was Yahoo! Travel’s “Regular Plan! Enjoy the Buffet & Our Full Cypress Hot Spring,” with an instant 10% discount applied, which came to ¥21,000 on a weekday rate including dinner and breakfast (this was in September). Split between two people, that’s ¥10,500 each — with a dinner buffet, hot spring, and manga library this good, that price is honestly too cheap!

Hotel Sunvalley Izu-Nagaoka: Hotel Overview

Now let’s get into the details of my stay at Hotel Sunvalley Izu-Nagaoka.

I got off the Tomei Expressway at the Numazu IC, entered the Izu Jukan Expressway, paid the ¥200 toll for a regular car, and reached the hotel after a short drive. Using the Izu Jukan Expressway makes access nice and easy.

The hotel’s free parking lot is behind the main entrance. It’s spacious, so even drivers who only get behind the wheel on trips can park comfortably. There’s also an entrance that connects directly to the parking lot, which is handy if you’re carrying a lot of luggage.

The hotel’s parking lot is nice and spacious, so you can park with peace of mind.

Check-In

Walking in through the main entrance, the front desk was right there to the right. A hotel staff member loaded our luggage onto a cart for us.

After going over the facility basics and the bath and dinner times, we received our room key and check-in was complete! Checkout is at 10:00, and every room has Wi-Fi.

Behind the front desk there’s a spacious lobby and the restaurant area.

Apparently there are yukata in the rooms too, but next to the front desk there’s also a selection of yukata in small, medium, and large sizes plus patterned ones, along with slippers and amenities like a women’s care set and razors.

Guest Room

My room this time was a Japanese-style room in the Kagetsutei wing on the 4th floor. From the front desk, you take the elevator right behind it up to the guest-room floor.

Each elevator lobby has a hand sanitizer station.

My room was 408. The door is on the smaller side, opened with a physical key.

The room is an 8-mat Japanese-style room plus a hiroen sitting area. For some reason, the curtains were already closed.

The chair is a reclining floor-seat style. Personally, it’s not really my favorite type of chair (laughs).

There were two kinds of welcome sweets waiting for us. A baked treat is a nice way to shake off the fatigue of the trip.

The hiroen area has two chairs and a small table — a slightly compact setup.

Near the entrance there’s a T-fal electric kettle and cold water. Unfortunately, ice comes at an extra charge and has to be requested at the front desk.

The TV is a little on the small side, but it’s perfectly fine for watching regular digital broadcasts.

There’s a safe below the TV. The safe uses an old-style physical key.

The fridge is the standard type you’d find in a ryokan room or business hotel. If you’re planning to grab ice cream after your bath, it’s worth double-checking the space above the fridge before you buy.

A full yukata set and bath towel set are provided. There’s also a haori jacket for each guest, perfectly suited to a traditional Japanese ryokan stay.

Bathroom and Sink

The bath, sink, and toilet are all separate, independent spaces, though the sink has a noticeably dated look. Still, it was cleaned thoroughly down to the details, so it never felt unpleasant.

With the hot spring and open-air bath available, you’ll basically never use the in-room bath, which is a bit on the small side anyway.

The toilet is a long, narrow space with plenty of room (a quietly important detail).

Large Communal Bath at Hotel Sunvalley Izu-Nagaoka

After relaxing in the room, it’s time to head to the large communal bath! Bring the towels provided in your room with you.

Getting from the Kagetsutei wing’s 4th floor to the large communal bath means taking the elevator down and passing by the front desk — a bit of a walk.

On the 2nd floor there’s the “Hot Spring Manga Library” — I was already looking forward to it!

Walking down an elegant hallway with real ryokan atmosphere — the best. This is also where the Ayametei wing’s Japanese-Western rooms are located. The 1st floor of the Ayametei wing has rooms with their own source-fed open-air bath.

Next to the main building’s large communal bath, Yumedono, there are two private bath and massage reception counters. A massage runs ¥4,000 for 40 minutes, and you can also book one through the front desk’s internal line 5. The private baths include a rock-style indoor bath, a cypress-wood open-air bath, and a wooden-tub bath, plus an accessibility-friendly bath with a lift chair, making it a facility used by a wide range of guests, including those with mobility needs.

The entrance to Manten no Yu, modeled after Nara’s Horyuji Temple. Ichi-no-Yu (Bath No. 1) is in front, and Ni-no-Yu (Bath No. 2) is further back. At the top of the stairs there’s the Hot Spring Manga Library, boasting over 30,000 volumes — one of the largest collections in Izu!

This is Ni-no-Yu, set as the men’s bath for the day. The two baths swap daily, so staying overnight means you get to enjoy both.

Ichi-no-Yu stands out for its tall hexagonal window in the center, with a spacious bath wrapped in the scent of cypress wood.

There’s even a reclining bath — a true hot-spring paradise with so many different styles of baths to try.

This is Ni-no-Yu again, this time for a morning bath the next day. On a weekday morning, I had the whole place to myself.

The indoor bath is spacious too, with a perfectly comfortable temperature!

The washing-area amenities are from POLA’s ESTHE ROYER line, with one shower type that runs for a few seconds per push and another that runs continuously until you twist it off.

Open-Air Bath at Hotel Sunvalley Izu-Nagaoka

Ichi-no-Yu’s open-air bath is spacious too, with two pot baths and a rock-lined open-air pool! The pot baths feel absolutely amazing.

Ni-no-Yu also has an open-air rock bath! Full of atmosphere and genuinely lovely.

Sauna at Hotel Sunvalley Izu-Nagaoka

Pictured is the sauna at Ni-no-Yu.

It’s an L-shaped, two-tier dry sauna running at a relatively mild 85°C or so, which might feel a bit underwhelming if you’re a serious sauna fan.

There’s a kick board at the entrance, so it stays clean to use.

The cold plunge after the sauna runs around 21°C — a touch on the warm side, though since the baths swap between men and women daily, it feels like the temperature is set to suit a broad range of guests.

Dinner at Hotel Sunvalley Izu-Nagaoka

After the bath, it’s time for dinner. The dinner venue is the 1st-floor restaurant Houou, with fully assigned seating.

Dinner features around 50 Japanese, Western, and Chinese dishes, making full use of seafood from Suruga Bay and mountain produce from the Izu countryside, with a seasonal menu that changes throughout the year.

You can also enjoy freshly prepared dishes straight from the live cooking stations run by each chef.

There’s sushi too, which had the kids thrilled! Six varieties were on offer: egg, salmon, whelk, squid, tuna, and shrimp.

All-you-can-eat snow crab too! It’s the kind of thing that leaves you quietly focused for a while.

A gorgeous lineup of dishes, row after row.

Dinner runs until 21:00, and I was still happily working through the buffet right up to the end, but staff hurried us out the moment the clock struck closing time — a little disappointing on the hospitality front.

Hotel Sunvalley Izu-Nagaoka’s Private Bath

• Hours: 16:00, 17:00, 18:00, 19:00, 20:00, 21:00 (50 minutes per session)
• Price: ¥2,200 per session
• Reservations: Must be booked by phone in advance, (055) 948-3800

Breakfast at Hotel Sunvalley Izu-Nagaoka

Breakfast is served in the same 1st-floor restaurant Houou as dinner, with free seating in the morning.

Entry runs from 7:00-9:00, with breakfast wrapping up at 9:30.

Breakfast offers around 30 Japanese and Western dishes. There’s even salmon sashimi — a genuinely indulgent way to start the morning.

Hotel Sunvalley Izu-Nagaoka’s Hot Spring Manga Library

On the 2nd floor above the main building’s large communal bath, Yumedono, there’s a manga library with over 30,000 volumes.

The sheer number of manga makes you forget you’re even at a hot spring! Beyond manga, there are also novels and picture books.

Popular series like Jujutsu Kaisen, Spy x Family, Demon Slayer, and Tokyo Revengers are all available in full!

There’s a dedicated sports manga corner too. I didn’t realize there were this many sports manga alone… no way to read through it all!

And there’s even more manga, manga, manga in the room beyond!

There’s also private seating available for an extra fee.

It’s just enormous! With a collection this size, everyone’s bound to find at least one title they’ll want to read.

Hotel Sunvalley Izu-Nagaoka’s Shop

There’s a gift shop next to the 1st-floor front desk. It’s open 8:00-11:00 and 14:30-23:00.

You can pick up souvenirs even on the morning you’re checking out, which is a lifesaver if you forgot to grab any the day before.

Final Impressions of My Stay

This time I used the hotel as a place to stay after a round of golf.

Driving in via the Izu Jukan Expressway made access easy with no confusion, and the parking lot was nice and spacious.

The building shows some age, but it’s thoroughly cleaned and genuinely comfortable to stay in. The hot spring, Manten no Yu, spans around 1,000 square meters, and the open-air bath and sauna felt so good that I lost track of time and ended up soaking for about 2 hours.

The food was on par with other buffet restaurants — nothing overly extravagant, but exactly the kind of dishes that suit an everyday palate, and I ate my fill right up until closing. Hotel rates have been climbing every year, but if you can stay for around ¥10,000 a night, that’s genuinely great value!

Hotel Sunvalley Izu-Nagaoka is a hotel I’d be happy to revisit the next time I’m in Izu-Nagaoka.

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About the author

Joe

I love hotels, hot springs, and saunas across the whole country!!
I’ve made it to 40 prefectures so far.
Around 100 hotel stays and 50+ saunas visited, and the count keeps climbing.
My hobbies are travel, golf, snowboarding, saunas, and the gym.

Getting good information is essential to living a rich life.

I’ll keep sharing useful info for wherever your next trip takes you! For work inquiries (venue PR, advertising, hotel article requests), please reach out through this blog’s contact form.
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Certified Sauna & Spa Health Advisor