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Sanyo-so

Property class: 4

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Located close to Izu-Mito Sea Paradise, 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. In addition to a Japanese garden, guests can connect to free in-room WiFi, with speed of 50+ Mbps.

Reviews

9.0 out of 10
Wonderful

Popular amenities

  • Parking included
  • Free WiFi
  • Restaurant
  • Air conditioning
  • Breakfast available
  • Housekeeping
The current price is NT$13,052
NT$15,793 total
Sep 1 - Sep 2

Room options

Available filters for rooms
Showing 9 of 9 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
  • Free WiFi

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
  • Free WiFi

View all photos for Main Building Suite

Bathroom | Combined shower/tub, spring water tub, free toiletries, hair dryer

Main Building Suite

  • Sleeps 8
  • 8 Twin Futons
  • Free WiFi

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
  • Free WiFi

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
  • Free WiFi

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
  • Free WiFi

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
  • Free WiFi

View all photos for Japanese-style Room

Dining | Breakfast and dinner served

Japanese-style Room

  • Sleeps 4
  • 4 Double Futons
  • Free WiFi

View all photos for Deluxe Japanese-western Room, Non-smoking New Building Japanese-western Deluxe Room / Private Hot Spring Bath / Main Room, Bedroom, Dressing Area

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

Deluxe Japanese-western Room, Non-smoking New Building Japanese-western Deluxe Room / Private Hot Spring Bath / Main Room, Bedroom, Dressing Area

  • Sleeps 9
  • Free WiFi
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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
    28 min drive - 15.2 km
  • Katsuragiyama Ropeway
    4 min drive - 2.0 km
  • Ganjoju-in
    4 min drive - 2.4 km
  • Hojoji Temple
    5 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)
    151 min drive

Restaurants

  • 藤
    17 min walk
  • 王道鈴家
    4 min drive
  • 桜鮨 伊豆長岡店
    17 min walk
  • 華々
    4 min drive
  • ふくやEMAIR
    4 min drive

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:
    • 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
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The price is NT$5,134
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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

Bathroom

  • Bidet
  • Free toiletries
  • Hair dryer
  • Private bathroom
  • 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
Safety features at this property include a fire extinguisher
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

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 2026/8/18, prices found for a 1-night stay for 2 adults at Sanyo-so on 2026/9/1 start from NT$13,052, 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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