KAI Hakone (界 箱根) is a KAI ryokan at 230 Yumotochaya, Hakone-machi, Ashigarashimo-gun, Kanagawa. located at 230 Yumotochaya, Hakone-machi, Ashigarashimo-gun, Kanagawa, and has 34 rooms. It is a charming hot spring ryokan on the old Tokaido road in Hakone Yumoto Onsen. Guests can find healing in the waters flowing from Mt. Yusaka and in the gentle murmur of the Sukumo River.
Where KAI Hakone is
KAI Hakone sits at 230 Yumotochaya, Hakone-machi, Ashigarashimo-gun, Kanagawa. The property has 34 rooms, which places it among the smaller KAI houses — so the atmosphere stays quiet even when the house is full.
Getting there
KAI Hakone is at 230 Yumotochaya, Hakone-machi, Ashigarashimo-gun, Kanagawa 250-0312. By car from Tokyo, take the Tomei Expressway Atsugi Interchange via Hakone Shindo; it is approximately 3 minutes from Sukumogawa Interchange. From Nagoya or Osaka, it is approximately 60 minutes from Gotemba Interchange. When using a car navigation system, enter the map code 57 190 404*66. Snow and road freezing may occur in winter, and the use of studless tyres or chains is recommended.
By train, Tokyo Station to Hakone-Yumoto Station is 110 minutes by Shinkansen via Odawara Station, Shinjuku Station to Hakone-Yumoto Station is 90 minutes by Odakyu Romance Car, and Nagoya Station to Hakone-Yumoto Station is 150 minutes by Shinkansen via Odawara Station. Route buses are by Hakone Tozan Bus, boarding at Hakone-Yumoto Station, Bus Stop No. 4.
What the ryokan is like
KAI Hakone is a charming hot spring ryokan on the old Tokaido road in Hakone Yumoto Onsen, where guests can find healing in the waters flowing from Mt. Yusaka and the gentle murmur of the Sukumo River. The onsen experience is a relaxed soak in baths lined with ancient hinoki cypress, with only the murmur of the river breaking the silence, and an elegant window frames the lush nature surrounding the ryokan.
The rooms offer scenic views, and KAI Signature Rooms offer a deeper dive into the local culture. At dinner, a classic Hakone dish of broth-boiled beef and vegetables is served; the page notes that beef became more prominent in Hakone food culture in the 19th century to cater to the Westerners who flocked to the area’s hot springs.
Around Hakone-machi
Hakone Yumoto Onsen sits on the old Tokaido road. Hakone is a post town that crosses the most difficult part of the Tokaido road, and teahouses known as chaya supported people resting before and after crossing the mountain pass. The area is known for its hot springs; in the 19th century beef became more prominent in Hakone food culture to cater to Westerners who flocked to the area’s hot springs. Waters flow from Mt. Yusaka and the Sukumo River runs nearby.
Frequently asked questions
What is the address of KAI Hakone?
KAI Hakone is at 230 Yumotochaya, Hakone-machi, Ashigarashimo-gun, Kanagawa 250-0312.
How many rooms does KAI Hakone have?
KAI Hakone has 34 rooms.
Is EV charging available?
EV charging is available 24 hours, with 200V/6kW × 4. Reservations can be made after booking your stay. External guests may also use the service, but priority is given to overnight guests. Please register at the front desk on the day of use.
Planning a Kanto trip around it
KAI Hakone works as one or two nights inside a longer Kanto route. We build private itineraries with a car and a private guide, and we book the ryokan as part of the plan rather than leaving you to assemble it. Tell us your dates and who is travelling and we will design it free of charge, with no obligation.
See our private tours in Kanto, or message us on WhatsApp.
Current rates for KAI Hakone are worth checking against your dates before you commit — rates move with the season in onsen country.
BLISS TRAVEL plans private tours across Japan, China, Australia, New Zealand and Europe. Property details in this guide come from the official Hoshino Resorts pages for KAI Hakone; facilities and access can change, so we confirm them with the ryokan before you book.
Planning a private tour?
Tell us your travel dates and we will shape an itinerary around them — hotels, cars and a private guide.
BLISS TRAVEL is part of ZEUS GROUP