ONSEN

ONSEN

A natural hot spring where you can feel the four seasons.

Our onsen springs 70 tons of hot water a day.
It is a weakly alkaline simple hot spring that springs from our premises. The spring quality has a smooth effect on the skin. Our onsen is also known to be a blessing hot spring for conceiving a child.

Public Bath

Public Bath
Public Bath
Public Bath
Public Bath
Public Bath
Public Bath

An open-air bath where you can enter while enjoying the sound of the river.
We have an indoor and an outdoor bath each for men and women.

Open-air Bath

Open-air Bath

An open-air bath with a view along the Hayakawa stream. The expression changes depending the seasons. Please enjoy deep nature of Hakone.

Open-air Bath

Baby cot available

There is a baby cot and a diaper trash can in the public bath.

Baby cot available

Onsen information

Opening hour 14:00-24:00 6:00-10:00
Facility Baby cot

Private Indoor Bath “Danshaku no Yu”

Private Indoor Bath “Danshaku no Yu”
Private Indoor Bath “Danshaku no Yu”
Private Indoor Bath “Danshaku no Yu”

Enjoy your private bath time with your family or friends. Baron Okura also enjoyed the cypress bath. As well as the bathtub, the walls are made of Japanese cypress.
The scent of Japanese cypress can be healing for your body and mind.

Onsen information

Opening hour 14:00-24:00 6:00-10:00
Fee Guests: Free for 40 minutes per group
Reservation On your arrival
Facility Baby cot

* Depending on the reservation status, it may not be possible to reserve the time slot you like. Thank you for your understanding.

Private Outdoor Bath “Kanzan-no-Yu”

Private Outdoor Bath “Kanzan-no-Yu”
Private Outdoor Bath “Kanzan-no-Yu”
Private Outdoor Bath “Kanzan-no-Yu”

Across the suspension bridge over Hayakawa River, you can have the private open-air bath with plenty of nature all to yourself.

Cold Sake in the hot spring

At the private open-air bath " Kanzan-no-Yu ", you can enjoy the cold sake bottled in bamboo while soaking in the bathtub. Bamboo bottle cold sake (1,600 yen)

Cold Sake in the hot spring
  • Large Open-Air Bath

    Large Open-Air Bath

    Kanzan-no-Yu is large enough to fit five to six people easily.

  • An open-air bath where you can feel the different faces of four seasons.

    An open-air bath where you can feel the different faces of four seasons.

    You can enjoy cherry blossom trees and autumn leaves in the fall on the premises.
    It’s where you can feel the nature of Tonosawa.

  • Suspension bridge leading to the private open-air bath

    Suspension bridge leading to the private open-air bath

    Suspension bridge leading to the private open-air bath
    To the private open-air bath, you will cross a suspension bridge exclusively built for the bath.

  • Private open-air bath entrance of Kanzan-no-Yu

    Private open-air bath entrance of Kanzan-no-Yu

    The entrance of the private open-air bath has an old Japanese atmosphere.

Onsen information

Opening hour 14:00 to 24:00, 6:00 to 10:00
Fee Usage fee Guests: 3,000 yen per group for 50 minutes
Reservation You can reserve in advance or on arrival.

Information on the suite rooms with onsen

Enjoy your relaxing time in your private open-air bath.

Our suite rooms have a private onsen where you can have the onsen all to yourself.

To Suite Rooms
  • To Suite Rooms
  • To Suite Rooms
  • To Suite Rooms

Information on a day trip

We welcome day-trip customers.

You can enjoy our hot springs even you’re not staying at our hotel.
Feel free to contact us for more information.

Information on a day trip

Onsen information

Opening hour 12:00 to 18:00 (irregular holidays)
Fee Public bath: 2,000JPY for 2 hours per person
Private open-air bath Kanzan-no-Yu: 90 minutes per person 3,000JPY
Reservation Your reservation is required in advance.
  • Public bath: 2,000JPY for 2 hours per person

    Usage fee

    Public bath: 2,000JPY for 2 hours per person

  • Private open-air bath Kanzan-no-Yu: 90 minutes per person 3,000JPY

    Usage fee

    Private open-air bath Kanzan-no-Yu: 90 minutes per person 3,000JPY

Efficacy and Spring Quality

Name of the Hot Spring Tonosawa Onsen
Spring Quality

Weakly alkaline simple hot spring

Source Temperature 54.2℃
Efficacy Neuralgia, muscle pain, arthralgia, motor paralysis, joint stiffness, bruises, chronic digestive diseases, poor circulation, fatigue recovery, health promotion
Contraindications Acute illness (especially when fever), active tuberculosis, malignant tumors, severe heart disease, respiratory failure, renal failure, bleeding disorders, kidney failure, hemorrhagic disease, severe anemia, and other commonly ongoing illnesses, during pregnancy (especially early pregnancy and right before childbirth)

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