Hoshinoya Karuizawa will be offering a stay program focused on quality sleep, "Karuizawa Sleep Stay -Summer-," from July 1st to August 31st, 2026. Taking advantage of the cool climate unique to this summer resort, it is a three-day program designed to guide guests to restful sleep while revitalizing their mind and body.

According to a World Health Organization (WHO) survey, the average sleep duration in Japan is among the shortest in developed countries, and sleep duration tends to be the shortest of the year, especially during the summer. Therefore, this program focuses on the body clock that governs sleep and wake cycles. Through forest bathing, hot springs, and pillow adjustments by expert staff, it aims to promote quality sleep.

During your stay, we will provide you with a breakfast called "Awakening Breakfast," which incorporates soy products rich in tryptophan, a precursor to melatonin, the sleep hormone, and a dinner called "Cool Breeze Evening Meal," which cools the body and supports restful sleep. Enjoy the bounty of Shinshu while preparing your body for sleep from the inside out.

During the day, a "stroll through the shade" is offered to gently regulate your body clock and promote restful sleep. Guests can relax and enjoy forest bathing in their own way, whether by reading in the shade of trees where a refreshing breeze blows or strolling along the clear stream. In addition, "ume anmitsu" (a Japanese dessert) made with refreshing plum syrup is also served, creating a cool and refreshing afternoon.

Before going to bed, guests can practice the "deep breathing bathing method" using buoyancy in the "Meditation Bath," a hot spring exclusively for hotel guests. Furthermore, expert staff adjust the 100% wool "Ergo Pillow" to suit each individual's sleeping position. The self-medication wear® "Resona Bio®" provided as sleepwear can be taken home, which is a nice bonus as it allows guests to create a comfortable sleeping environment at home as well.

Three days of restful relaxation for mind and body, surrounded by the shade and cool breezes of Karuizawa. This wellness stay for adults allows you to re-evaluate your sleep, which can often be disrupted by the heat and busyness of life, and to restore balance to your mind and body.

◆HOSHINOYA Karuizawa "Karuizawa Sleeping Stay -Summer-"
[Period] February 2026st to March 7st, 1 (excluding some days)
[Price] 56,900 yen per person (tax and service charge included, accommodation fee not included)
[Included] Pillow rental, take-home of Self-Medication Wear® "Resona Bio®", lecture on deep breathing bathing method, morning meal, evening meal in the cool breeze, and a stroll through the shade (with cold tea and sweets).
[Capacity] 1 group per day (up to 1 people)
[Eligible] Guests staying at Hoshinoya Karuizawa
[Reservations] Accepted up to 7 days in advance on the official website