Sanyo-so

Travelers can savor authentic Japanese cuisine in a ryokan where serene gardens meet soothing hot springs for a traditional cultural experience

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Where to?

Dates

January 2026

23

February 2026

New Building Deluxe Japanese-Western Room, Non Smoking | Minibar, in-room safe, free WiFi, bed sheets - Sanyo-so (Izunokuni)

Breakfast and dinner served, Japanese cuisine - Sanyo-so (Izunokuni)

Sanyo-so ryokan offers a peaceful retreat near Izu-Mito Sea Paradise. Guests relax in the indoor mineral hot spring and wander through the Japanese garden. The on-site お食事処 restaurant serves local specialties, while shopping facilities and luggage storage enhance the stay.

Excellent

Popular amenities

Parking included
Free WiFi
Restaurant
Air conditioning
Breakfast available
Housekeeping

￥84,001 total

Feb 12 - Feb 13

Check prices for these days

Room options

All rooms

3+ beds

2 beds

Showing 9 of 9 rooms

Deluxe Japanese Room - Annex, Non Smoking

Exceptional

Highlights

Yard

Air conditioning

Mini-fridge

TV

Free extra futon mattress

Spring water bathtub

Shower/tub combination

Hair dryer

83 sq m
Sleeps 5
2 Twin Beds and 3 Twin Futons
Mountain view

Standard Japanese Room - Annex, Non Smoking

Highlights

Yard

Air conditioning

Mini-fridge

TV

Free extra futon mattress

Spring water bathtub

Shower/tub combination

Hair dryer

63 sq m
Sleeps 4
2 Twin Beds and 2 Twin Futons
Mountain view

Main Building Suite

Sleeps 8

New Building Deluxe Japanese-Western Room, Non Smoking

Highlights

Yard

Air conditioning

Mini-fridge

TV

Free extra futon mattress

Spring water bathtub

Shower/tub combination

Hair dryer

92 sq m
Sleeps 5
2 Twin Beds
Mountain view

New Building Japanese Style Suite Room,Non smoking

Highlights

Yard

Air conditioning

Mini-fridge

TV

Free extra futon mattress

Spring water bathtub

Shower/tub combination

Hair dryer

141 sq m
Sleeps 8
2 Twin Beds and 6 Twin Futons
Garden view

Main Building Japanese Style Suite Room,Non smoking

Highlights

Yard

Air conditioning

Mini-fridge

TV

Free extra futon mattress

Spring water bathtub

Shower/tub combination

Hair dryer

135 sq m
Sleeps 8
8 Twin Futons
Garden view

Minibar, in-room safe, free WiFi, bed sheets

New Building Japanese-Western Style Room (standard Type)

Sleeps 4

New Wing Suite Japanese-Style Room

Sleeps 8

New Building Japanese-Western Style Room (deluxe Type)

Sleeps 5

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About the neighborhood

Izu Nagaoka Onsen, a neighborhood in Izunokuni, is home to Sanyo-so. Mishima Taisha Shrine and Mishima Sky Walk are notable landmarks, and if an activity is on the agenda, check out Port of Numazu. Don't miss out on a visit to Izu-Mito Sea Paradise. Visit our Izunokuni travel guide

410-2204, Shizuoka, Izunokuni, 270 Mamanoue

What's nearby

Port of Numazu
19 min drive - 11.3 km
Ganjoju-in
3 min drive - 1.7 km
Katsuragiyama Ropeway
4 min drive - 2.0 km
Hojoji Temple
4 min drive - 1.8 km
Izu-Mito Sea Paradise
11 min drive - 6.0 km

Getting around

Izunagaoka Station
12 min walk
Haneda Airport (HND)
120 min drive

Restaurants

ひょうたん寿司
17 min walk
掌
古奈青山
14 min walk
与志富
5 min walk
Italian Kitagawa
18 min walk

About this property

Sanyo-so

Upscale ryokan near Izu-Mito Sea Paradise

Located close to Port of Numazu and Mishima Taisha Shrine, Sanyo-so provides an indoor mineral hot spring (onsen), shopping on site, and a coffee shop/cafe. For some rest and relaxation, visit the 2 indoor/outdoor hot springs. The on-site restaurant offers breakfast and dinner. Stay connected with free in-room WiFi, with speed of 50+ Mbps, and guests can find other amenities such as a Japanese garden.

Other perks include:

Free self parking
Japanese breakfast (surcharge), hot springs on site, and an elevator
Luggage storage

Room features

All guestrooms at Sanyo-so offer perks such as air conditioning, in addition to amenities like free WiFi and safes.

More conveniences in all rooms include:

Spring water tubs, bidets, and free toiletries
43-inch TVs with digital channels
Private yards, mini fridges, and electric kettles

Similar properties

Luxury Room, Private Bathroom, River View (with Open-Air Bath, 103) | Bathroom | Separate tub and shower, free toiletries, hair dryer, towels

Breakfast included
Parking included
Free WiFi
Air conditioning

￥127,500 total

Jan 26 - Jan 27

Compare similar properties

Property amenities

Internet

Available in all rooms: Free WiFi
In-room WiFi speed: 50+ Mbps

Parking and transportation

Free uncovered self parking on site

Food and drink

Daily Japanese breakfast available 8:00 AM to 8:30 AM for a fee: JPY 4,500 per person
A coffee shop/cafe
A restaurant
Kaiseki meal

Things to do

2 indoor/outdoor hot springs
Shopping

Family friendly

Mini-fridge

Conveniences

Guidebooks
Limited-hour front desk
Luggage storage

Guest services

Change of bedsheets (on request)
Change of towels on request
Housekeeping (daily)

Outdoors

Garden

Spa

2 indoor/outdoor hot springs
Hot springs open from 3:00 PM - 9:30 AM
Hot springs water temperature - 106 ºF
In-room massages
Public indoor mineral hot springs (onsen)
Public outdoor mineral hot springs (onsen)
Yukata (Japanese robes)

Accessibility

If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
Bathroom emergency pull cord
Elevator
Handrails in stairways
Well-lit path to entrance
Wheelchairs on site

More

2 floors
Designated smoking areas

Room amenities

Bedroom

Bedsheets provided
Free extra futon

Bathroom

Bidet
Free toiletries
Hair dryer
Shampoo
Shower/bathtub combination
Slippers
Spring water bathtub
Toilet paper
Toothbrush and toothpaste
Towels provided

Entertainment

43-inch TV with digital channels

Food and drink

Electric kettle
Free bottled water
Mini-fridge
Minibar

More

Air conditioning (climate-controlled)
Fusuma (room partition)
Heating (climate-controlled)
Phone
Safe
Tatami (woven mat) flooring
Tokonoma (alcove)
Window screens

Policies

Check-in

Check-in start time: 3 PM; Check-in end time: 5:00 PM

Check-out

Check-out before 11 AM

Special check-in instructions

The front desk is open daily from 8:00 AM - 6:00 PM

Front desk staffed during limited hours

This property doesn't offer after-hours check-in

Information provided by the property may be translated using automated translation tools

Access methods

Front desk (limited hours)

Pets

Pets not allowed

Children and extra beds

Children are welcome

Rollaway/extra beds are not available

Cribs (infant beds) are not available

Property payment types

Important information

Fees

You'll be asked to pay the following charges at the property. Fees may include applicable taxes:

A bathing tax, collected at the property, may be charged. The bathing tax applies to properties with hot springs and ranges from JPY 150-500 per person, per night based on local regulations. Please note that further exemptions may apply.

We have included all charges provided to us by the property.

Optional extras

Fee for Japanese breakfast: approximately JPY 4500 per person

The above list may not be comprehensive. Fees and deposits may not include tax and are subject to change.

You need to know

Extra-person charges may apply and vary depending on property policy

Government-issued photo identification and a credit card, debit card, or cash deposit may be required at check-in for incidental charges

Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed

Guests must contact this property in advance to reserve access to the public bathing facility

This property accepts credit cards, debit cards, mobile payments, and cash

Mobile payment options include: Alipay, PayPay, Merpay, and R Pay

This property reserves the right to pre-authorize the guest's credit card prior to arrival.

Cashless transactions are available

This property has outdoor spaces, such as balconies, patios, terraces which may not be suitable for children; if you have concerns, we recommend contacting the property prior to your arrival to confirm they can accommodate you in a suitable room

This property affirms that it follows the cleaning and disinfection practices of Prince Safety Commitment (Prince Hotels & Resorts)

We should mention

Hot springs access available from 3:00 PM to 9:30 AM

The Japanese Ministry of Health, Labour, and Welfare requires all international visitors to submit their passport number and nationality when registering at any lodging facility (inns, hotels, motels, etc. ); additionally, lodging proprietors are required to photocopy passports for all registering guests and keep the photocopy on file

Please note that some properties do not permit guests with tattoos to use the onsite public bathing facilities

Property is also known as

Sanyo-so Inn Izunokuni

Sanyo-so Inn

Sanyo-so Izunokuni

Sanyo-so

Sanyo-so Ryokan

Sanyo-so Izunokuni

Sanyo-so Ryokan Izunokuni

Frequently asked questions

Is Sanyo-so pet-friendly?

No, pets are not allowed at this property.

How much does it cost to stay at Sanyo-so?

As of Jan 23, 2026, prices found for a 1-night stay for 2 adults at Sanyo-so on Feb 12, 2026 start from ￥68,390, excluding taxes and fees. This price is based on the lowest nightly price found in the last 24 hours for stays in the next 30 days. Prices are subject to change. Choose your dates for more accurate prices.

How much is parking?

Self parking is free at this property.

What time is check-in at Sanyo-so?

Check-in start time: 3 PM; Check-in end time: 5:00 PM. After-hours check-in is not available.

What time is check-out at Sanyo-so?

Check-out is at 11 AM.

Where is Sanyo-so located?

Located in Izu Nagaoka Onsen, this ryokan is within 9 mi (15 km) of Izu-Mito Sea Paradise, Mishima Taisha Shrine, and Port of Numazu. Mishima Sky Walk is 12.3 mi (19.8 km) away. Izunagaoka Station is 12 minutes by foot.

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Sanyo-so Reviews

8.8

Excellent

9.6

Cleanliness

7.6

Location

8.8

Staff & service

9.0

Property conditions & facilities

10/10 Excellent

Okan

Dec 27, 2025

Liked: Cleanliness, amenities, property conditions & facilities

Amazing place with impeccable facilities, delicious food, and outstanding service.

Stayed 1 night in Dec 2025

10/10 Excellent

Chung Yin

Jul 27, 2024

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Historical onsen ryoken

The onsen Ryoken is a famous one in Japan as the Japanese Emperors had stayed at the estate for a few times. We stayed at a room with private onsen which is excellent. The food was also great and we had a great time.

Stayed 1 night in Jul 2024

10/10 Excellent

??

Sep 18, 2025

Liked: Cleanliness, amenities

スタッフの皆様とても素敵な笑顔で親切でした。村野藤吾の建物も素晴らしかったです。ご飯も美味しく温泉も良かったです。ありがとうございました。

Stayed 1 night in Sep 2025

4/10 Poor

まゆみ

Aug 17, 2025

Liked: Cleanliness, staff & service

Disliked: Amenities, property conditions & facilities

外観、内装が素晴らしいと思い、予約しました。予め『外観なし』と記載されていたので、期待はしていませんでしたが、あまりにも荒れ果てた庭？だったので、一緒に旅行した母親は文句タラタラでした。旅館に泊まると、売店での買い物が楽しみの一つですが、17時閉店の為、行こうと思ったら『終わりました』と言われ、がっかりです。お食事処や、大浴場までの距離も長く、老齢の母には辛かったようです。部屋風呂にも温泉がひいてあり、ゆったりした浴室だったのが、救いでした。

Stayed 1 night in Aug 2025

8/10 Good

Kenji

Dec 6, 2022

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

なかなか良い体験でした

今回は宿泊客が多かったせいか、食事がいつもの雄峰ではなく、奥の広間でした。広間に行く途中のバー共々古く趣きもあり、得した気分になる体験でした。サービスや料理はいつものいい意味で安定したクオリティでゆっくり休むことができました。

Stayed 1 night in Dec 2022

8/10 Good

Kenji

Nov 24, 2021

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

今回も快適に過ごさせていただきました

広くて快適な部屋、散歩にちょうど良い庭、スタッフの気配りが心地よく、5月に続き、2度目の訪問です。今回部屋風呂が前回に比べて広かったので良かったです。食事も前回同様、美味しく、量も多過ぎず我が家には丁度良いです。食事の質を上げて更なる高級路線を目指すか、今のまま、親しみやすい高級感を楽しめる路線にするのか、中途半端な感じはします。

Stayed 1 night in Nov 2021

10/10 Excellent

Kenji

May 18, 2021

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

和のリゾート

都会の喧騒を離れ、素晴らしいお部屋、庭園、温泉をゆったりと楽しむことができました。スタッフの気遣いも心地良かったです。紅葉の季節にまた宿泊したいと思いました。

Stayed 1 night in May 2021

8/10 Good

NAKAMOTO

Jan 31, 2020

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

夕食の量が多すぎ。もう少し少なくして質を上げて欲しい。

Stayed 1 night in Jan 2020

10/10 Excellent

Verified traveler

Oct 13, 2019

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

大変落ち着いたホテル

緑多い広々とした敷地、趣のあるお部屋、館内全体、特に廊下がゆったりと設けられており、その余裕感たっぷりの空間を常に感じながら心底ゆっくりと過ごす事ができました。是非また利用したいと感じられるホテルです。

Stayed 1 night in Oct 2019

8/10 Good

Verified traveler

Mar 19, 2019

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

庭園は素晴らしい

温泉、その他の施設は二重丸。皺が寄った廊下の絨毯は残念。晩飯も期待した程では無い。庭園は素晴らしい。

Stayed 1 night in Mar 2019

10/10 Excellent

Verified traveler

Jan 29, 2018

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

まるで別荘のような旅館

壮大な庭園を中心とした、小さな集落のような旅館です。岩崎家の別荘を生かしながら、当時の優雅な暮らしに思いを馳せながら、別宅のように過ごせるのがここの魅力です。

Stayed 1 night in Jan 2018

6/10 Okay

まさよし

Jan 14, 2017

Disliked: Staff & service

今まで何回か泊まりましたが、だんだんサービスが悪くなっているような気がします❗ 今回はデラックスルームを頼みましたが、かなり狭いへやでした。

8/10 Good

ayako

Aug 31, 2016

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

庭の素晴らしい宿。

素晴らしい庭の案内が20分くらい行われた．とてもよかった。食事は、期待ほどではなかった。次回は純日本的な部屋に泊まりたいと、思いました。趣があってよさそうです。今回のベットの部屋も広くて清潔感にあふれていた。

8/10 Good

れん, 東京

Aug 22, 2016

Liked: Cleanliness, property conditions & facilities, room comfort

Disliked: Staff & service

和溢れる旅の常宿

高級感があり快適な時間を過ごすことができました。特に内風呂が最高です。ただ、女中さんは高齢な方が多く、勘繰り過ぎかもしれないですが、言葉が嫌味に感じる事が多々ありました。悪気は無かったのだとは思いますが…。

10/10 Excellent

Yasuaki

May 13, 2025

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Stayed 1 night in Apr 2025

10/10 Excellent

Verified traveler

Mar 8, 2025

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Stayed 1 night in Mar 2025

10/10 Excellent

Nadia

Jun 28, 2024

Liked: Cleanliness, staff & service, property conditions & facilities

Stayed 1 night in Jun 2024

10/10 Excellent

Joo-young

Apr 25, 2024

Stayed 1 night in Apr 2024

8/10 Good

Verified traveler

Jul 15, 2021

Stayed 1 night in Jul 2021

Sanyo-so

Choose dates to view prices

Photo gallery for Sanyo-so

Reviews

Popular amenities

Check prices for these days

Room options

View all photos for Deluxe Japanese Room - Annex, Non Smoking

Deluxe Japanese Room - Annex, Non Smoking

Highlights

View all photos for Standard Japanese Room - Annex, Non Smoking

Standard Japanese Room - Annex, Non Smoking

Highlights

View all photos for Main Building Suite

Main Building Suite

View all photos for New Building Deluxe Japanese-Western Room, Non Smoking

New Building Deluxe Japanese-Western Room, Non Smoking

Highlights

View all photos for New Building Japanese Style Suite Room,Non smoking

New Building Japanese Style Suite Room,Non smoking

Highlights

View all photos for Main Building Japanese Style Suite Room,Non smoking

Main Building Japanese Style Suite Room,Non smoking

Highlights

View all photos for New Building Japanese-Western Style Room (standard Type)

New Building Japanese-Western Style Room (standard Type)

View all photos for New Wing Suite Japanese-Style Room

New Wing Suite Japanese-Style Room

View all photos for New Building Japanese-Western Style Room (deluxe Type)

New Building Japanese-Western Style Room (deluxe Type)

About the neighborhood

What's nearby

Getting around

Restaurants

About this property

Sanyo-so

Similar properties

MIZUMARI

Property amenities

Internet

Parking and transportation

Food and drink

Things to do

Family friendly

Conveniences

Guest services

Outdoors

Spa

Accessibility

More

Room amenities

Bedroom

Bathroom

Entertainment

Food and drink

More

Policies

Check-in

Check-out

Special check-in instructions

Access methods

Pets

Children and extra beds

Property payment types

Important information

Fees

Optional extras

You need to know

We should mention

Property is also known as

Frequently asked questions

Have a question?

Reviews

Sanyo-so Reviews

Excellent

9.6

7.6

8.8

9.0

Reviews