Sanyo-so

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Luxury
4.0 star property
9.2

Wonderful

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.

Popular amenities

  • Parking included
  • Free WiFi
  • Restaurant
  • Air conditioning
  • Breakfast available
  • Housekeeping
The current price is NT$13,582
NT$16,434 total
Oct 26 - Oct 27

Room options

Available filters for rooms
Showing 6 of 6 rooms

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

A traditional Japanese room with tatami flooring, sliding doors, and a view of greenery.

Deluxe Japanese Room - Annex, Non Smoking

9.6 out of 10
Exceptional
(4 reviews)
  • Mountain view
  • 893 sq ft
  • 1 bedroom
  • Sleeps 5
  • 2 Twin Beds and 3 Twin Futons

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

A traditional Japanese-style room with tatami flooring, a low wooden bed, a sliding door, and a view of greenery outside.

Standard Japanese Room - Annex, Non Smoking

  • Mountain view
  • 678 sq ft
  • 1 bedroom
  • Sleeps 4
  • 2 Twin Beds and 2 Twin Futons

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

A traditional Japanese-style bedroom with tatami flooring, a large bed, a television, and a view of a garden through large windows.

New Building Deluxe Japanese-Western Room, Non Smoking

  • Mountain view
  • 985 sq ft
  • 1 bedroom
  • Sleeps 5
  • 2 Twin Beds

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

A traditional Japanese room with tatami flooring, a low table, and a view of greenery through a shoji screen.

New Building Japanese Style Suite Room,Non smoking

  • Garden view
  • 1516 sq ft
  • 1 bedroom
  • Sleeps 8
  • 2 Twin Beds and 6 Twin Futons

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

A traditional Japanese room with tatami flooring, shoji screens, and a low table with chairs.

Main Building Japanese Style Suite Room,Non smoking

  • Garden view
  • 1451 sq ft
  • 1 bedroom
  • Sleeps 8
  • 8 Twin Futons

View all photos for Main building annex

A traditional Japanese room with tatami flooring, a low table, and a television.

Main building annex

  • Garden view
  • 1023 sq ft
  • 1 bedroom
  • Sleeps 5
  • 5 Twin Futons
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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
Map
270 Mamanoue, Izunokuni, Shizuoka, 410-2204

What's nearby

  • A bridge over water with boats docked nearby.
    Port of Numazu
    25 min drive - 14.5 km
  • A suspension bridge with turquoise railings spanning a forested valley.
    Mishima Sky Walk
    28 min drive - 19.4 km
  • Katsuragiyama Ropeway
    3 min drive - 2.4 km
  • Hojoji Temple
    5 min drive - 1.8 km
  • Izu-Mito Sea Paradise
    10 min drive - 7.0 km

Getting around

  • Izunagaoka Station
    12 min walk
  • Haneda Airport (HND)
    151 min drive

Restaurants

  • ひょうたん寿司
    17 min walk
  • フォーテューナ
    14 min walk
  • あやめ寿し
    7 min walk
  • HANSHARO BEER STAND
    17 min walk
  • 麺めん亭
    19 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 luggage storage
    • An elevator
  • 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:
    • Bathrooms with spring water tubs and bidets
    • 43-inch TVs with digital channels
    • Mini fridges, electric kettles, and heating

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  • Parking included
  • Free WiFi
  • Air conditioning
  • Breakfast available
9.2 out of 10, Wonderful, 308 reviews
The price is NT$7,935
NT$9,601 total
Oct 28 - Oct 29
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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 2026/10/25, prices found for a 1-night stay for 2 adults at Sanyo-so on 2026/10/26 start from NT$13,582, 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.

Can I cancel my reservation for free and receive a full refund?

Yes, this property offers free cancellation on select room rates, because flexibility matters! Please refer to the property cancellation policy on our site for more details about any exclusions or requirements.

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Reviews

Sanyo-so Reviews

9.2

Wonderful

9.6

Cleanliness

7.6

Location

9.0

Staff & service

9.2

Property conditions & facilities
Rating 10 - Excellent. 16 out of 25 reviews
Rating 8 - Good. 7 out of 25 reviews
Rating 6 - Okay. 1 out of 25 reviews
Rating 4 - Poor. 1 out of 25 reviews
Rating 2 - Terrible. 0 out of 25 reviews

Reviews

Verified review

10/10 Excellent

Liked: Cleanliness, amenities, property conditions & facilities
Amazing place with impeccable facilities, delicious food, and outstanding service.
Stayed 1 night in Dec 2025
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
special experience in a historical Japanese house, the garden is amazing. Great for travelers who prefer serenity.
Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

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
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Beautiful property. If you’re looking for a traditional Japanese experience, this is the place. FYI, if you have tattoos, you will not be able to use the public Onsen, but book a room with a private Onsen and you’re all set.
Stayed 3 nights in Mar 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
素敵でした
Stayed 1 night in Aug 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
日本庭園も含め、館内の至る所に和を感じる庭があり、それが非常に癒されました。部屋の内風呂がとても良く、温泉かけ流しでいつでも入れるのが良かったです。スタッフの方も非常に親切で、子連れの滞在客へのサポートもとても丁寧でした。また泊まりたいです。
Stayed 1 night in Mar 2026
Verified review

10/10 Excellent

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
Verified review

4/10 Poor

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
Verified review

8/10 Good

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
Verified review

8/10 Good

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
Verified review

10/10 Excellent

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
Verified review

8/10 Good

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
Verified review

10/10 Excellent

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
Verified review

8/10 Good

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
Verified review

10/10 Excellent

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
Verified review

6/10 Okay

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。
Verified review

8/10 Good

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。
Verified review

8/10 Good

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…。
Verified review

10/10 Excellent

Stayed 1 night in Jun 2026
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 1 night in Apr 2025
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Stayed 1 night in Mar 2025
Verified review

10/10 Excellent

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 1 night in Jun 2024
Verified review

10/10 Excellent

Stayed 1 night in Apr 2024
Verified review

8/10 Good

Stayed 1 night in Jul 2021