Hoshizora Onsen

The water that is collected in this onsen springs up from a depth of 1750 m and contains natural beauty-enhancing ingredients of low-alkalinity, creating an exquisite relaxation experience.
Guests can enjoy this outdoor onsen under a starry sky throughout the year.

Type
Onsen
Location
ARAI Bldg. 2F, Hoshizora Onsen & Pool
Hours
Open Hours listed in price list
LOTTE ARAI RESORT - Wellness - Hoshizora Onsen - Hoshizora Onsen

Price

Open HoursAdultsChildren
Hotel GuestWeekdays
5:00~10:00
(Last Entry 9:30)
13:00~23:00
(Last Entry 22:30)
Free
Saturdays・Sundays・Holidays
5:00~23:00
(Last Entry 22:30)
VisitorWeekdays
13:00~23:00
(Last Entry 22:00)
¥900¥600
Saturdays・Sundays・Holidays
11:00~23:00
(Last Entry 22:00)
Before check-in / For use after check-outWeekdays
13:00~23:00
(Last Entry 22:00)
¥500¥250
Saturdays・Sundays・Holidays
11:00~23:00
(Last Entry 22:00)
※ Adult (13 and over) / Child (4〜12) / 3 and under Free
※ Prices are including tax.

[ Towels ]
・Please bring towels from your room for use at the Hoshizora Onsen.
Rented towels (Bath & Face Towels) at Hoshizora Onsen at ¥200 (tax included).

【 Use of hot springs before check-in/after check-out 】
You can use the hot springs before check-in/after check-out for the following rates.
Adults: ¥500 / Children: ¥250
* This offer is available to guests who stayed the previous day.

Hot Spring Benefits
LOTTE ARAI RESORT features Hoshizora Onsen, which flows from 1,750 meters underground.
This mildly alkaline hypotonic hot spring is gentle on the skin, excellent for hydration, and contains elements beneficial for beauty.
Hot Spring Information
- Source : Okenashi Onsen
- Type : Simple Hot Spring
- Temperature : Source temperature: 31.4°C, Hot Spring Temperature: 41.0°C
Indications
- Chronic muscle or joint pain and stiffness
(Rheumatoid arthritis, osteoarthritis, lower back pain, neuralgia)
- Sensitivity to cold and peripheral circulation disorders
- Decreased gastrointestinal function, mild hypertension, impaired glucose tolerance (diabetes),
and mild high cholesterol
- Mild chronic digestive disorders, hemorrhoid pain
- Autonomic nervous system instability and stress-related symptoms
(such as sleep disorders and depressive states)
- Recovery from fatigue and health promotion
Contraindications
- During the active phase of an illness (especially when accompanied by a fever)
- Active tuberculosis, advanced malignant tumors, severe anemia, or significant physical weakness
- Severe heart or lung disease, severe kidney disease with swelling
- Gastrointestinal bleeding or visible bleeding
- Acute exacerbation of chronic illnesses
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Facility Information

Bathing Station
Acclimating your body to the bath temperature and the hot spring's properties enhances the benefits of Hoshizora Onsen.
Main Bath
After sports and activities, relax and unwind in the main bath to ease the day’s fatigue.
Reclining Bath
The bubbles gently massage your body, helping to relieve fatigue.
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Notes
  • Notes
    [ Prohibitions ]
    - No shoes with dirt floors are allowed in the building.
    - No gangsters are allowed to enter.
    - Please refrain from bathing if you have a skin condition or contagious disease.
    - Children are kindly requested to use the baby bath.
    - No adult or child in diapers is allowed to enter the bathhouse.
    - Drunken persons are not allowed to enter the bathhouse.
    - No food or beverages are allowed in the bathrooms.
    - Hair dyeing and other chemicals are not permitted in the bathrooms.
    - Photography in the changing rooms and bathrooms is prohibited.
    Please note that taking pictures without permission from staff may be considered “voyeurism,” even if the room is unoccupied.
    If you are suspected of taking voyeuristic photos, we may ask you to confirm the data you have taken.

    [ Notes ]
    - Children under elementary school age are not allowed to use the venue.
    - Please use the security box for valuables, etc.
    - Any behavior that may cause inconvenience to other guests is prohibited.

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