Hotels of Earth

Sanyo-so

★★★★★ Mamamoue 270, Izunokuni, JP

9 guest rating· 151 reviews

The five stars

Sanyo-so holds a five-star rating in its official classification, the requirement for every property in the Hotels of Earth collection.

Guests score it 9.0/10 across 151 reviews.

About this hotel

Tranquil Japanese Oasis

Nestled within ever-changing Japanese gardens, Sanyo-so immerses guests in traditional elegance and serene surroundings.

Authentic Japanese Experience

Indulge in yukata robes, hot spring baths, and tea ceremonies, embracing the essence of Japanese culture in every detail.

Convenient Location

With Izu Nagaoka Train Station nearby and attractions like Izu Panorama Park and Shuzen-ji Temple a short drive away, convenience meets tranquillity at Sanyo-so.

Experience the allure of traditional Japan at Sanyo-so. Book your stay now for an unforgettable retreat.

Rooms & rates

Pick your dates. Prices are live, not cached.

New Building Deluxe Japanese-Western Room, Non Smoking

Sleeps 5 · 91 m² · 2× Twin bed

  • Private bathroom
  • Spring water bathtub
  • Bathroom emergency pull cord
  • Free WiFi
  • Minibar

<p><strong>2 Twin Beds</strong></p><p>985-sq-foot room with mountain views </p><br/><p><b>Layout</b> - Tokonoma (alcove) and fusuma (room partition)</p><p><b>Relax</b> - In-room massage available</p><p><b>Internet</b> - Free WiFi 50+ Mbps </p><p><b>Entertainment</b> - 43-inch TV with digital channels</p><p><b>Food & Drink</b> - Mini-fridge, minibar (fees may apply), electric kettle, and free bottled water</p><p><b>Sleep</b> - Bed sheets </p><p><b>Bathroom</b> - Private bathroom, spring water bathtub </p><p><b>Practical</b> - Yard, safe, and phone; extra futon mattress (free) available on request</p><p><b>Comfort</b> - Daily housekeeping and climate-controlled heating and air conditioning</p><p><b>Accessibility</b> - Bathroom emergency pull cord</p><p><b>Need to Know</b> - Housekeeping on request</p><p>Non-Smoking</p>

Main Building Japanese Style Suite Room,Non smoking

Sleeps 8 · 134 m² · 8× Futon Mat

  • Private bathroom
  • Spring water bathtub
  • Bathroom emergency pull cord
  • Free WiFi
  • Minibar

<p><strong>8 Twin Futons</strong></p><p>1451-sq-foot room with garden views </p><br/><p><b>Layout</b> - Tokonoma (alcove) and fusuma (room partition)</p><p><b>Relax</b> - In-room massage available</p><p><b>Internet</b> - Free WiFi 50+ Mbps </p><p><b>Entertainment</b> - 43-inch TV with digital channels</p><p><b>Food & Drink</b> - Mini-fridge, minibar (fees may apply), electric kettle, and free bottled water</p><p><b>Sleep</b> - Bed sheets </p><p><b>Bathroom</b> - Private bathroom, spring water bathtub </p><p><b>Practical</b> - Yard, safe, and phone; extra futon mattress (free) available on request</p><p><b>Comfort</b> - Daily housekeeping and climate-controlled heating and air conditioning</p><p><b>Accessibility</b> - Bathroom emergency pull cord</p><p><b>Need to Know</b> - Housekeeping on request</p><p>Non-Smoking</p>

Deluxe Japanese Room - Annex, Non Smoking

Sleeps 5 · 83 m² · 2× Twin bed, 3× Futon Mat

  • Private bathroom
  • Spring water bathtub
  • Bathroom emergency pull cord
  • Free WiFi
  • Minibar

<p><strong>2 Twin Beds and 3 Twin Futons</strong></p><p>893-sq-foot room, located in an annex building, mountain views</p><br/><p><b>Layout</b> - Tokonoma (alcove) and fusuma (room partition)</p><p><b>Relax</b> - In-room massage available</p><p><b>Internet</b> - Free WiFi 50+ Mbps </p><p><b>Entertainment</b> - 43-inch TV with digital channels</p><p><b>Food & Drink</b> - Mini-fridge, minibar (fees may apply), electric kettle, and free bottled water</p><p><b>Sleep</b> - Bed sheets </p><p><b>Bathroom</b> - Private bathroom, spring water bathtub </p><p><b>Practical</b> - Yard, safe, and phone; extra futon mattress (free) available on request</p><p><b>Comfort</b> - Daily housekeeping and climate-controlled heating and air conditioning</p><p><b>Accessibility</b> - Bathroom emergency pull cord</p><p><b>Need to Know</b> - Housekeeping on request</p><p>Non-Smoking</p>

Standard Japanese Room - Annex, Non Smoking

Sleeps 4 · 63 m² · 2× Twin bed, 2× Futon Mat

  • Private bathroom
  • Spring water bathtub
  • Bathroom emergency pull cord
  • Free WiFi
  • Minibar

<p><strong>2 Twin Beds and 2 Twin Futons</strong></p><p>678-sq-foot room, located in an annex building, mountain views</p><br/><p><b>Layout</b> - Tokonoma (alcove) and fusuma (room partition)</p><p><b>Relax</b> - In-room massage available</p><p><b>Internet</b> - Free WiFi 50+ Mbps </p><p><b>Entertainment</b> - 43-inch TV with digital channels</p><p><b>Food & Drink</b> - Mini-fridge, minibar (fees may apply), electric kettle, and free bottled water</p><p><b>Sleep</b> - Bed sheets </p><p><b>Bathroom</b> - Private bathroom, spring water bathtub </p><p><b>Practical</b> - Yard, safe, and phone; extra futon mattress (free) available on request</p><p><b>Comfort</b> - Daily housekeeping and climate-controlled heating and air conditioning</p><p><b>Accessibility</b> - Bathroom emergency pull cord</p><p><b>Need to Know</b> - Housekeeping on request</p><p>Non-Smoking</p>

New Building Japanese Style Suite Room,Non smoking

Sleeps 8 · 140 m² · 2× Twin bed, 6× Futon Mat

  • Private bathroom
  • Spring water bathtub
  • Bathroom emergency pull cord
  • Free WiFi
  • Minibar

<p><strong>2 Twin Beds and 6 Twin Futons</strong></p><p>1516-sq-foot room with garden views </p><br/><p><b>Layout</b> - Tokonoma (alcove) and fusuma (room partition)</p><p><b>Relax</b> - In-room massage available</p><p><b>Internet</b> - Free WiFi 50+ Mbps </p><p><b>Entertainment</b> - 43-inch TV with digital channels</p><p><b>Food & Drink</b> - Mini-fridge, minibar (fees may apply), electric kettle, and free bottled water</p><p><b>Sleep</b> - Bed sheets </p><p><b>Bathroom</b> - Private bathroom, spring water bathtub </p><p><b>Practical</b> - Yard, safe, and phone; extra futon mattress (free) available on request</p><p><b>Comfort</b> - Daily housekeeping and climate-controlled heating and air conditioning</p><p><b>Accessibility</b> - Bathroom emergency pull cord</p><p><b>Need to Know</b> - Housekeeping on request</p><p>Non-Smoking</p>

Japanese-Style Standard Room - New Building with Private Hot Spring Bath

Sleeps 4 · 63 m² · 2× Twin bed, 2× Futon Mat

  • Air conditioning
  • Single-room air conditioning for guest accommodation
  • Private bathroom
  • Shower
  • TV

(63㎡～71㎡) There is a tatami living room and a bedroom. Offering a relaxing ambiance and historic charm, this room comes with a TV, a seating area and a fridge. Guests can try on yukata robes and unwind with a cup of tea, made with an electric kettle and tea bags in the room. The room has a hot spring bathroom.

Japanese-Style Deluxe Room - New Building with Private Hot Spring Bath

Sleeps 5 · 83 m² · 5× Futon Mat

  • Air conditioning
  • Single-room air conditioning for guest accommodation
  • Private bathroom
  • Shower
  • TV

(83㎡～102㎡) There is a tatami living room and a bedroom or two tatami rooms (You can sleep on futons in the 2 tatami room). Offering a relaxing ambiance and historic charm, this spacious room comes with a TV, a seating area and a fridge. Guests can try on yukata robes and unwind with a cup of tea, made with an electric kettle and tea bags in the room. The room has a hot spring bathroom.

Deluxe Room with Tatami Area - New Building with Private Hot Spring Bath

Sleeps 5 · 91 m² · 2× Twin bed, 3× Futon Mat

  • Air conditioning
  • Single-room air conditioning for guest accommodation
  • Private bathroom
  • Shower
  • TV

The spacious family room offers air conditioning, tatami, as well as a private bathroom featuring a bath and a shower. The family room features an electric kettle, yukata, heating and a flat-screen TV with satellite channels. The unit offers 2 beds and 3 futons.

Japanese-Style Suite - New Building with Private Hot Spring Bath

Sleeps 8 · 140 m² · 8× Futon Mat

  • Air conditioning
  • Single-room air conditioning for guest accommodation
  • Private bathroom
  • Shower
  • TV

The spacious family room provides air conditioning, tatami, as well as a private bathroom featuring a bath and a shower. The unit offers 8 futons.

Standard Japanese-Style House - Annex with Private Hot Spring Bath

Sleeps 5 · 97 m² · 5× Futon Mat

  • Air conditioning
  • Single-room air conditioning for guest accommodation
  • Private bathroom
  • Shower
  • TV

The spacious family room features air conditioning, tatami as well as a private bathroom boasting a bath and a shower. The unit has 5 futons.

Amenities

  • Free WiFi
  • Hot spring bath
  • Free Parking
  • Restaurant
  • Screens / Barriers between staff and guests for safety
  • Air conditioning
  • 24-hour security
  • Non-smoking rooms
  • Non-smoking throughout
  • Family rooms
  • Access to health care professionals
  • Cashless payment available
  • CCTV outside property
  • Cleaning standards that are effective against Coronavirus
Show all 47 amenities
  • Coffee Shop on site
  • Daily housekeeping
  • Designated smoking area
  • Face masks for guests available
  • Fire extinguishers
  • First aid kit available
  • Garden
  • Guest room sealed after cleaning
  • Guest rooms disinfected between stays
  • Guests can opt-out any cleaning services during stay
  • Heating
  • Invoice provided
  • Key access
  • Kid meals
  • Laundry washed per local authority guidelines
  • Lift / Elevator
  • Luggage storage
  • Massage services
  • Meeting/banquet facilities
  • Open-air bath
  • Process in place to check health of guests
  • Property cleaned by professional cleaning companies
  • Public Bath
  • Safety deposit box
  • Sanitized tableware & silverware
  • Security alarm
  • Shuttle service
  • Shuttle service (free)
  • Smoke alarms
  • Special diet menus - on request
  • Staff adhere to local safety protocols
  • Thermometers for guests provided by property
  • Wine/champagne

Location

© OpenStreetMap contributors

Mamamoue 270, Izunokuni, JP

Check-in
from 03:00 PM to 05:00 PM
Check-out
until 11:00 AM

What guests say9151 reviews

+ Friendly staff+ Beautiful environment+ Excellent food− Coffee could be improved− Beds could be softer
Cleanliness8.4
Service9.4
Location9.4
Room Quality8.8
Amenities9.4
Value for Money8.8

Nous avons passé un excellent séjour

9.0

Une expérience incomparable

− Les repas n’étaient pas à notre goût

Soizic · BE · 2026-07-19

Guest review

10.0

Amazing staff and service. The rooms are big and all contain a private bath. The check in was easy and detailed.

− Nothing

Altiné · CA · 2026-07-14

Guest review

10.0

So quiet. The staff were all so friendly

− All was good

Aske · DK · 2026-07-14

Guest review

9.0

An amazing authentic Japanese style ryokan. We rented one of the rooms with an in-room Onsen and enjoyed the hot spring water.

− The beds are very firm but I believe that is a standard trait with most beds in Japan.

Ronald · US · 2026-06-09

Calming

9.0

It was a really unique experience. Very relaxing and quiet. The space is really intentional. Breakfast was amazing!

Giorgia · GB · 2026-06-08

Hotels of Earth · questions

Is Sanyo-so really a five-star hotel?
Yes. Its own classification data carries five stars; that rating, not a style label, is what puts a property in this collection.

Good to know

To eat dinner at the property, a reservation must be made in advance.Guests with tattoos may not be permitted to use the property’s public bathing areas or other facilities where the tattoos might be visible to other guests.

An accommodation tax per person, per night is not included in the price and must be paid at the property.

This property does not accommodate bachelor(ette) or similar parties.

Please inform of your expected arrival time in advance. You can use the Special Requests box when booking, or contact the property directly using the contact details in your confirmation.

A deposit may be required at the property.

›Parking

Free private parking is possible on site (reservation is not needed).

›Internet

WiFi is available in some hotel rooms and is free of charge.

›Children and extra bed policy

Children of any age are allowed.

Children up to and including 5 years old stay for free when using an existing bed.

You haven't added any cots.

You haven't added any extra beds.

›Pets

Pets are not allowed.