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  2. Bath


  • View private open-air bath Tenku-Yubo

    The Tenku Yubo (private bath) on the Seikaiso's top floor of Seikaiso has four baths, "Hokuto Shichisei," "Nagareboshi," "Galaxy," and "Amanogawa," which are inspired by the four springs that spread out in the sky.

    The water is pumped from the basement of the premises, and we do not circulate the water directly from the source.

    Entrance and bath are independent of each other, so it will be private while bathing so you can have a relaxing and private time.
    Hot spring bath hours
    ■Opening Hour  Morning (guests only) 7:00 to 8:30 ·From 12:00 to 21:00
    Visitors visiting the hot spring (reservations are also accepted in advance.)
    We accept reservations from 12:00 to 14:00.
    2,500 yen (tax included) for 45 minutes, including face towel fee

    Parking available(Free)
    Reservations cannot be made after 15:00.
    It will be a guide after you see it directly.
    Usage fee
    ○Overnight Stay   1,000 yen/45 minutes(Consumption tax included) ○General 45 minutes/2,500 yen(Consumption tax included)
  • Observation public bath(Indoor bath)

    Renewed in March 2022 to create a bright tiled space!

    Ocean views can be seen from the large windows on the sea side.
    It's available all night, so it's a good idea to see the scenery changing over time.

    Please enjoy the bath while admiring the vast view of Beppu Bay.

    Renewed in March 2022!
    The morning bath while watching the rising sunrise in Beppu Bay is a magnificent view.

    ◆Guests for Overnight Stay
    ·Available from 15:00 to 1:00/5:00 to 9:30.

    ※There is also a large public bath at the facility's sister residence "Seaside Hotel Mimatsu Oetei"
    You can use it for free, so please use it.
    The operating hours are as follows.

    ♦7th floor Rooftop open-air bath
    ・From 15:00 to 0:00/4:00 to 9:30
    ♦ 3rd floor observatory large bath
    ・From 15:00 to 9:30
  • Foot bath

    In a Japanese style room with a popular sea side footbath, you can enjoy footbath while watching the sea.

    Time spent relaxing while looking at the sea by immersing in foot bath, heals heart and body.

    It is exclusive for guests staying in a Japanese-style room with a foot bath.You can not use it as a stop-by hot water.

    Room with only "veranda footbath" only (9 rooms)
  • Guest room semi open-air bath

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    Seikaiso, The first "Japanese style room with open-air bath"
          The best luxury that you can see Beppu Bay while soaking in hot springs!

       A luxurious twin bed made by Sata Corporation in a Japanese room with sea view (Semi-double)

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Hot Springs

Beppu Hot Springs(Natural hot spring 100%) Hot Spring Baskdown ※It does not include artificial hot springs

Private Bath


Number of baths

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

Other bath facilities

Observation bath

Bath Terms of Use

·Large public bath with a view For hotel guests only, both men and women can take a bath from 15:00 to 1:00/5:00 to 9:30.

Onsen tax

Hot spring tax Adult 250 yen (children free) will be charged separately.

Hot Spring Qualities

Hydrogen carbonate springs·Chloride springs
Yeild of hot spring water : 4,200 l / h
Temperature: 52.3 ° C


●Bath indication
Chronic skin disease, frailty, chronic skin diseases, weak children, chronic women's diseases, neurological diseases, muscle pain, arthralgia, frozen shoulder, motor paralysis, joint stiffness, burns, sprains, chronic gastrointestinal disease, hemorrhoids, cold, Health Promotion
●Bath Contraindications
Acute illness (especially in case of fever), active tuberculosis, malignant tumor, heavy heart disease, respiratory insufficiency, renal failure, hemorrhagic disease, advanced anemia, other diseases undergoing general disease, pregnancy Last term