Forest Hot-Spring (Karuizawa Prince Hotel East)

This hot spring facility draws natural hot spring water from within the hotel grounds.
In the “Onsen Zone,” guests can enjoy indoor baths, open-air baths, and a steam sauna using natural hot springs, while admiring the beauty of the forest that changes with each season.
Surrounded by the breath of nature and wrapped in the gentle warmth of the spring water, guests are invited to a blissful moment of relaxation.

• Hot Spring Name: Karuizawa Yagasaki Onsen
• Discharge amount: 162 liters/minute
• Source Temperature: 43.5℃
• Spring Quality: Sodium-Chloride Hot Spring (Weak Alkaline, Hypotonic, High Temperature)
• Benefits: Neuralgia, muscle pain, joint pain, motor paralysis, recovery from fatigue, etc.
• Opening hours: 6:00A.M. – 11:00P.M. (Last entry 10:30P.M.)
• Fee: Free (Bathing tax ¥150 required)
• Notes: Facility is for staying guests only. Entire facility is non-smoking.

※Forest Hot-Spring and the fitness room are exclusively available for guests staying at Karuizawa Prince Hotel East, The Prince Karuizawa, and The Prince Villa Karuizawa.
　Guests staying at Karuizawa Prince Hotel West cannot use these facilities.
※Not available before check-in.
※After check-out, guests may use the facility until 3:00 P.M. for ¥1,500 per person (once per stay).

Changing Room Amenities
Men: Lotion, moisturizing milk, tissues, hairbrush, cotton swabs, razor, hand soap, negative ion hair dryer
Women: Cleansing, cotton, moisturizing lotion, moisturizing milk, cotton swabs, hairbrush, tissues, hand soap, negative ion hair dryer

Usage Rules & Notices

• Guests staying at The Prince Karuizawa, and The Prince Villa Karuizawa may check in at the Forest Hot-Spring front desk.
• Towels are available for rent at the hot spring entrance.
• Boys aged 7 or older must use the men’s bath; girls aged 7 or older must use the women’s bath.
• Please wash your body before entering the bath.
• Wipe yourself dry before leaving the bath area.
• Do not place towels, shampoo, or other items in the bathwater.
• No food, drinks, or magazines in the bathing area.
• Be careful of slippery floors.
• Lost locker keys will incur a ¥3,000 replacement fee.
• Beware of temperature differences when using the open-air bath.
• The hotel is not responsible for accidents or injuries due to customer negligence.
• Guests wearing diapers cannot use the facility.
• Bathing suits and clothing are not allowed in the bath.
• Guests with bathing contraindications may not use the hot spring.
• Swimming, diving, submerging, or using floats/balls are strictly prohibited.
• Cameras and electronic devices with cameras (smartphones, mobile phones, etc.) are prohibited.
• Members of criminal organizations, or those with tattoos, are not permitted. If found, you will be asked to leave immediately.
• Violent behavior, immoral acts, or actions causing discomfort to other guests will result in immediate eviction.