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Onsen introduction

In 1954 (1656), Teikoku Oil Co.,Ltd, Teikoku Oil Co.,Ltd collected high-quality Onsen springs from wells mined in this area for oil and natural gas extraction.
Therefore, on July 5, 1958, 1958 opened a public bathhouse with a resting place.
Fountain quality is sodium chloride spring (weakly alkaline hypertonic low Onsen) and contains salt similar to sea water ingredients, it is salty, colorless and transparent hot water.
By bathing, salt is attached to the skin and it prevents evaporation of sweat, so it has a good moisturizing effect and it is hard to melt, so it is said to be "hot water".
We use the Onsen Unohama Onsen of No. 6 well of Unohama Onsen as hot water.
  • Open Air Bath Included, Large Communal Bath

    "Hoshi-no-yu (Men's Bath) / Tsuki-no-yu (Women's Bath)" with a public bath with outdoor bath

    · You can take a bath in the bath for 24 hours.
    · We use a Onsen Unohama Onsen of No. 5 well of Unohama Onsen as hot water.
    There are effects on various symptoms such as those with atopic constitution, low back pain, stiff shoulders and so on.
    Please refer to "Analysis table of Unohama Onsen" about the efficacy of Onsen.
  • Garden outdoor bath, Sodium-chloride fountain(Weak alkaline hypertonic low Onsen)

    Please enjoy the scent of hinoki and Japanese garden.
    Each room has been used by reservation system, the charge is 45 minutes 1,100 yen.
    When you arrive at the hotel, please reserve the hotel as soon as possible.
    ※1 wash place, No Toilet
    ※Reservation required
  • Sea of Japan Observation Liquor Barrel Bath Limited Time(You cannot take a bath during bad weather during winter.)

    You can relax in the hot water while watching the sunset over the Sea of Japan from the rooftop sake barrel bath with a view of the Sea of Japan.
    The barrel bath is available on a reservation basis for each room.
    The price is 1,100 yen for 45 minutes.
    When you arrive at the hotel, please reserve the hotel as soon as possible.
    ※1 shower room, No Toilet
    ※Reservation required

    Not Onsen

    Hot spring bath hours
    From 15:00 to 20:00
    Hot spring bathing category
    Reserved mixed bath
    Usage fee
    45 minutes ¥1,100

Hot Springs

Unohama Onsen

Open Air Bath

Yes (There are also men and women (including change of time) · Available for private use)

Private Bath


Number of baths

"Outdoor bath] Man: 2 Female: 2 Mixed Bath: 0
[Inner bath] Man: 1 Female: 1 Mixed Bath: 0
[sauna] Man: 0 Female: 0 Mixed Bath: 0

Bath Terms of Use

There are two private open-air baths:1. Observation sake barrel bath 2. Garden open-air bath
Usage time:15:00 to 23:00
1 time 45 minutes 1,100 yen/Available by reservation
Large public bath available 24 hours

Onsen tax

Onsen tax:100 yen for adults / 50 yen for children (7 to 12 years old) will be charged separately.