Kai Support deep sleep with hot spring bathing and our original mattress “Fuwakumo Sleep” that feels like sleeping on a cloud! Proposing a quality sleep experience at a hot spring inn

[Kai] Support deep sleep with hot spring bathing and our original mattress “Fuwakumo Sleep” that feels like sleeping on a cloud! Proposing a quality sleep experience at a hot spring inn ​
Hoshino Resort Press release: April 23, 2025 [Kai] Support deep sleep with hot spring bathing and our original mattress “Fuwakumo Sleep” that feels like sleeping on a cloud! Proposing a quality sleep experience at a hot spring inn ~Now is the time to go on a trip to get a good night’s sleep with “sleep tourism” at a hot spring inn~
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-990e7eed9bbe3b78d6119093fd26f3e7-3900×2601.jpg Local room “□ Room” (Kai Poroto) Kai, a hot spring inn brand developed by Hoshino Resorts nationwide, offers a 1 night and 2 day stay at a hot spring inn that will give you a luxurious sleep experience. In 2012, the original mattress “Fuwakumo Sleep” was jointly developed by “Nippon Bed,” a long-established mattress manufacturer that is particular about “Japaneseness,” and “Kai.” In a recent survey of travelers, half of them answered, “I want to travel with the purpose of getting a deep sleep,” indicating the growing need for sleep when traveling. (*1) The hot spring inn brand “KAI” offers stays that meet the needs of those travelers. In addition to sleeping on our original mattress, we offer a high-quality sleep experience through hot and lukewarm hot spring baths, “Onsen Iroha,” a guide to effective hot spring bathing, and “steamed ginger bath” before bed. *1: From Booking.com “Survey on “Travel Trend Prediction” in 2024” Feature 1: “Fluffy Sleep” that supports deep sleep Since 2012, our 20 facilities nationwide have been introducing the original mattress “Fuwakumo Sleep,” developed jointly with the long-established mattress manufacturer “Nippon Bed.” Unlike the bed you use every day at home, we developed and introduced Fuwakumo Sleep because we want you to get a luxurious sleep that you don’t get in everyday life when you go on a short 1 night 2 day or 2 night 3 day hot spring trip. It was also named “Fuwakumo Sleep” because we wanted people to experience the feeling of sleeping on a fluffy cloud. The bed’s mattress springs, which support deep sleep, are made of a layer of luxurious urethane and slightly hard felt. This is not a Western bed style mattress, but a 20cm thick mattress that has rounded corners and is fluffy, just like the futons that Japanese people love, but does not overwhelm the space of a guest room at an inn. (Reference: )
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-d7ca2abb798b85cf42694fa659990cee-3900×2600.jpg Local room “Nagato Gosai no Ma” (Kai Nagato)
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-ae83d5a7fa594d4c45556b43243ce5da-3900×2601.jpg Local room “Satsuma Shirasu Daichi-no-ma” (Kai Kirishima) Feature 2: Preparing to enjoy luxurious sleep ・Guideline on how to bathe so you can feel the effects of hot springs “Onsen Iroha” We hold “Onsen Iroha” classes that teach you how to take a bath to feel the effects of hot springs. The event is held at the same time as your check-in time, so you can learn about the effects of the hot springs before taking a bath and experience them while taking a bath. ・Hot spring bathing with hot water and lukewarm water There are two indoor baths in the large public bath, a “Nuruyu” set at 37-38 degrees and a “Atsuyu” set at 41.5 degrees. By slowly soaking in lukewarm water, your parasympathetic nervous system will become dominant and you will have a good night’s sleep. ・”Ginger hot water” that warms your body from the core All guest rooms are equipped with steaming ginger bath to warm your body from the core and help you sleep comfortably. After relaxing in the hot springs by stimulating the parasympathetic nervous system, we will help you take a breather before bed, warming your body from the core and leading to a good night’s sleep.
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-63a39d4529dcc390935d914bc9546e0d-3000×1999.jpg “Hot Spring Iroha” (Kai Izumo)
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-4b86a8949f66e2c6d5b309f637ef9a69-3000×2002.jpg Large bath (Kai Unzen)
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-8e405328d6e0fda8cb47aafeedaec5c6-3000×2000.jpg Steamed ginger soup Feature 3: “Modern hot spring gymnastics” performed in the morning after waking up comfortably
https://prcdn.freetls.fastly.net/release_image/33064/1443/33064-1443-d30928b40e957eeb1c1dbbbaa4e14b22-3000×2000.jpg Modern hot spring gymnastics (Kai Akiho) At all of our facilities, we hold “Modern Hot Spring Exercises” in the morning. This is a unique exercise that incorporates local movements and breathing techniques that let you breathe in the clear morning air. By doing this in the morning when you wake up feeling refreshed, you can spend the day in good health. What is “Kai” “Kai” is a hot spring inn brand operated by Hoshino Resorts with 23 facilities nationwide. With the theme of “Royal, yet new,” we pursue hospitality that meets modern needs while taking advantage of the changing seasons, Japanese flavor, and tradition. It also features “Gochi-raku” where you can experience the traditional culture and crafts of the area, and “Gochi-style rooms” where you can experience the local culture. In August 2025, KAI Hakone, located in Hakone Yumoto Onsen, Kanagawa Prefecture, will reopen after renovation, and in spring 2026, KAI Kusatsu is scheduled to open in Kusatsu Onsen, Gunma Prefecture.
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