A property filled with Japanese relaxation and elegance, surrounded by trees.

The largest open-air bath in Western Japan can accommodate up to 500 people at once, offering an experience akin to an attraction. Immerse yourself in the flowing Onsen and fully enjoy the sense of liberation.

  • As the name “Accommodation with a Large Open-Air Bath” suggests, it’s wonderful that there are multiple spacious, open-air baths with a great sense of openness. There are also plenty of washing stations, so I could enjoy the hot water freely without worrying about other guests. I was also surprised that each of the four free private baths is as large as, or even larger than, a typical open-air bath. The morning bath starts at 6:00, but Onsen lovers would be even happier if it opened a little earlier. The Room shows its age to some extent, but it was well cleaned and comfortable. The meals were just the right amount—not too much or too little—and the breakfast rice porridge was especially good. When I mentioned that the lighting during dinner was glaring because it shone directly on me, they responded immediately; they also kindly explained details about the return bus service—overall, the staff’s hospitality was excellent. Although access by public transportation is somewhat limited, this is an Accommodation I would definitely like to stay at again if I have another chance to visit Kumano.

    コイモ 3/11/2026
  • The largest open-air bath in western Japan was amazing. This accommodation allows you to relax and enjoy the onsen surrounded by abundant nature.

    美味しい会 1/11/2026

Facilities and Services

See All
  • Hot spring
  • Pet-friendly
  • Accessibility
Open-air bath / Free-flowing hot spring / Private bath / Free shuttle service
IN14:00~19:00
OUT11:00
Number of rooms19 rooms
PetPermitted
Your childPermitted

Notice from the Accommodation

[Notice of Outdoor Onsen Facility Hot Water Supply Construction]
Thank you for always choosing Watarase Onsen.

Starting from July 1, 2024, we will be conducting excavation work within the outdoor Onsen Facility to secure a stable hot water supply. During this period, the men's outdoor Onsen and three areas at the back will be unavailable. Depending on the progress of the construction, there may also be restrictions on access to other areas. The construction is expected to take approximately one and a half years to complete.

We sincerely apologize for the inconvenience caused over this extended period and kindly ask for your understanding and cooperation.

Watarase Onsen General Manager

# [Last-Minute Discount] Enjoy Onsen to Your Heart's Content at a Hot Spring Touring Property! Indulge in the Grand Open-Air Bath <Room Only>

IN 14:00~19:00
OUT 11:00
¥31,900
No meals ; 2 peopleTax included¥28,710
(USD 181.41)

# All open-air baths feature free-flowing onsen water! Indulge in hot springs at our ryokan with a variety of baths! [Room Only]

IN 14:00~19:00
OUT 11:00
¥33,000
No meals ; 2 peopleTax included¥29,700
(USD 187.67)

# [Last-Minute Discount] Enjoy Onsen to Your Heart's Content at a Hot Spring Touring Property! Indulge in the Grand Open-Air Bath <Room Only>

IN 14:00~19:00
OUT 11:00
¥31,900
No meals ; 2 peopleTax included¥28,710
(USD 181.41)

# All open-air baths feature free-flowing onsen water! Indulge in hot springs at our ryokan with a variety of baths! [Room Only]

IN 14:00~19:00
OUT 11:00
¥33,000
No meals ; 2 peopleTax included¥29,700
(USD 187.67)

# [Last-Minute Discount] Enjoy Onsen to Your Heart's Content at a Hot Spring Touring Property! Indulge in the Grand Open-Air Bath <Room Only>

IN 14:00~19:00
OUT 11:00
¥34,100
No meals ; 2 peopleTax included¥30,690
(USD 193.93)

# All open-air baths feature free-flowing onsen water! Indulge in hot springs at our ryokan with a variety of baths! [Room Only]

IN 14:00~19:00
OUT 11:00
¥35,200
No meals ; 2 peopleTax included¥31,680
(USD 200.18)

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Introduction of the Accommodation

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Lily

Travel enriches the soul. A property filled with Japanese relaxation and elegance. Clear seasonal scenery. Traditional Japanese-style guest rooms. A restaurant with an impressive high ceiling. A tranquil and heartwarming space, along with seasonal cuisine, warmly welcomes all visitors.

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Natural Onsen, free-flowing from the source.

~Savor the aroma of the world-renowned Onsen with superior water quality and abundant nature~ A holiday undisturbed by anyone, forgetting time and soaking in the hot springs. The open-air bath along the mountain stream offers a relaxing Onsen experience. The tranquil Onsen embraced by the mountain slopes continues to flow abundantly today. You can enjoy the changing beauty of the four seasons: the fresh greenery of spring, the murmuring streams of summer, the autumn foliage, and the winter steam.

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Tourist Information
Kumano Kodo

The ancient path "Kumano Kodo" is the route once traveled by predecessors aiming to visit the three Kumano shrines. Walking along the moss-covered old path through natural forests, you will encounter many scenic and historical sites, including the remains of the Ninety-Nine Oji Shrines. It is said that people walked this path over approximately one month, carrying their admiration for the sacred land and various prayers and wishes.

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Pet House

We offer 5 cages for your convenience. Heating and air conditioning are fully equipped. "Pet House Stay" 1 night per pet / 2,000 Yen (tax included)

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Meal

【Dinner】We offer a monthly changing menu at each Facility. 【Breakfast】A Japanese-style set meal using local ingredients.

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Room

The Room, blending traditional Japanese style with modern architectural elegance, features interiors that incorporate modern sensibilities. Additionally, river-side rooms offer views of the clear stream of the Shison River flowing right in front.

Facilities and Equipment of Accommodation

  • The room
    The room
  • Hot Springs & Baths
    Hot Springs & Baths
  • Meal
    Meal

Basic Information

Card information
VISA / MASTER / JCB / AMEX / DINERS
Pets
Permitted
Rental of cages inside the outdoor pet house (next to Hotel Sasayuri) 【Equipped with air conditioning and heating】 1 night per pet / 2,000 yen (excluding tax) ※ Entry into the hotel is not allowed ※ All care such as walking, feeding, and toilet needs must be handled by the customer.
BreakfastBreakfast is a Japanese set meal made with local ingredients.
Your child
You can stay.
Room service
Not available
Common amenities
  • × Shampoo · conditioner
  • × Body soap · soap
  • ○ Face towel
  • ○ Bath towel
  • × Body towel · sponge
  • ○ Toothbrush set
  • ○ Comb · Brush
  • × Shower cap
  • ○ Hair dryer
  • ○ Shaving
  • × Shaving Gel/Foam
  • × Bath additives
  • ○ Yukata
  • × Pajamas
  • × Bathrobe
  • × Slippers
  • × facial cleanser
  • × Toner
  • × Lotion
  • × Makeup remover
  • × Cotton swab
  • × Cotton
  • × Clothing deodorizing spray
  • ○ Refrigerator
  • × Minibar
  • ○ Electric kettle
  • ○ Tea set (free)
  • ○ Television
  • ○ Safe
  • × Scale
  • × Trouser press
  • × Free morning edition
  • × Pay-per-view broadcast
  • × Satellite broadcasting
Facilities and Features
  • ○ Hot spring
  • × Rooms with open-air baths available
  • ○ Open-air bath
  • ○ Free-flowing hot spring
  • × Large public bath
  • ○ Private bath
  • × Sauna
  • × Ganbanyoku (rock bathing)
  • × Within a 5-minute walk from the station
  • × Within a 5-minute walk to the convenience store.
  • × Indoor pool
  • × Outdoor pool
  • ○ Pet-friendly
  • × Spa facility
  • × Fitness
  • ○ Free shuttle service
  • × Shuttle Service (Paid)
  • × Room service
  • × Room Service Available 24 Hours
  • ○ Barrier-free
  • × Childcare services
Esthetic Massage
None
Fitness gym
None
Open-air bath
The number of Open-air bath
2
Business Hours
06:00~22:00
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Water is added only during the summer for temperature adjustment.
Private bath
The number of Private bath
4
Business Hours
06:00~23:30
Hot spring
Available
Free-flowing
Available
Milky hot spring water
None
Additional Information
100% natural hot spring (Add water)
Remarks
Water is added only during the summer for temperature adjustment.
Spring quality and benefits

Sodium bicarbonate spring (baking soda spring)

Skin beautifying effects, relief for gastrointestinal diseases, neuralgia, and skin conditions.

※Regarding the notation of "Gensen Kakenagashi"
In some facilities, heating or adding water for temperature adjustment may be performed. Additionally, please note that in some parts of the facility, the hot spring water may not be free-flowing from the source. For more details, please contact each facility.

SaunaNone
Hot stone spaNone

Reviews

Overall Score
4.22
Good (18)
  • Rooms & Amenities
    3.56
  • Facility
    3.72
  • Hospitality & Service
    4.39
  • Meals
    4.72
  • Onsen & Bath
    4.56
  • Satisfaction
    4.39

*Reviews that have been translated from Japanese.*

*Showing only reviews from 一休.com (Japanese) and Yahoo!トラベル.*

Access Information

Address
Wakayama Prefecture45-1 Wataze, Hongu-cho, Tanabe City
TEL:+81-735-42-1185

Train/JR Kisei Line Kii-Tanabe Station, approximately 120 minutes by route bus to Kumano Hongu Taisha
Car/Hanwa Expressway: From Kamitonda I.C, approximately 70 minutes via National Route 42 ~ National Route 311

Parking Information
Fee
Free for guests
Parking time
---
Parking space
No restrictions
Number of parking spaces
200 cars available outdoor
Valet service
Unavailable

Pickup and drop-off information
Available (Free)【JR Shirahama Station Shuttle Service】Pick-up at Shirahama Station at 13:00 / Departure from the hotel at 10:30 (Advance Reservation required by the day before)

We also provide Shuttle Service to the Kumano Kodo trail in the Kumano Hongu Taisha model course. Feel free to contact us.

Frequently Asked Questions

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