Hakone Kowakien Tenyu (箱根小涌園 天悠), located in Ninotaira, Hakone, Kanagawa, has renovated its in-house restaurant "Dining Hakone" and added a free-flow (unlimited drinks) option to its popular premium dinner buffet, available from May 29, 2026 (Friday). The new format presents the meal as an all-inclusive style experience.
The inn has long offered a dinner buffet featuring seasonal ingredients, aiming to make the dining experience itself a highlight of each stay. The newly introduced free-flow option adds the enjoyment of pairing drinks with food, along with the experience of crafting personalized cocktails — creating broader appeal for a variety of guests.

Drinks Lineup
The free-flow selection includes a range of standard drinks: beer, highball, and sours. Beers featured include Sapporo Black Label, Sapporo SORACHI 1984, and Asahi Super Dry. Sours and highball options include Sapporo Sour Hyosai 1984, Taru-High Club Lemon, and Black Nikka / Dewar's highball.
A standout feature is the use of "1883 MAISON ROUTIN" (1883 メゾン・ルータン), a premium natural syrup brand from France. Guests can mix their own colorful cocktails using sparkling wine, gin, vodka, or liqueurs as a base, with the syrups adding vibrant colors and aromatic complexity for a truly personalized cocktail experience.

Also making its debut in the Hakone area is the "Extra Burst" (エクストラバースト), a high-carbonation draft tower offering non-alcoholic sparkling beverages. The system delivers a finely beaded, sharp carbonation that enhances the refreshing experience.

Dining Hakone Free-Flow Overview
Menu
- Beer: Sapporo Black Label, Sapporo SORACHI 1984, Asahi Super Dry
- Sour: Sapporo Sour Hyosai 1984, Taru-High Club Lemon
- Highball: Black Nikka, Dewar's
- Others: Japanese sake, wine, original cocktails using 1883 MAISON ROUTIN syrups from France, non-alcoholic carbonated beverages from the Extra Burst high-carbonation draft tower (a Hakone area first)
Period: From May 29, 2026 (Friday)
Price: From ¥44,000 per person for double-occupancy rooms (tax and service charge included; bathing tax separate)
Room types: Standard rooms, top-floor rooms, special rooms
Meals: Premium buffet for both dinner and breakfast at the restaurant
Reservations:
- Dinner 5:00 PM seating: https://ourl.jp/qX4SE
- Dinner 7:00 PM seating: https://ourl.jp/mgP3p

About Hakone Kowakien Tenyu
Hakone Kowakien Tenyu is a ryokan-style inn where all 150 guest rooms feature private open-air baths. The property is located in Ninotaira, Hakone, Kanagawa.
Facilities:
- Guest rooms: 150 rooms (120 standard rooms with open-air baths / 24 top-floor rooms with open-air baths / 6 special rooms with open-air baths)
- Restaurants: 3 locations (1 inside the main building, 2 on the property grounds), plus 1 bar lounge
- Large communal baths: 2 locations (each with indoor and outdoor baths; gender rotation system)
- Other: Garden, Hakone Onsen Shrine, spa, gift shop
Address: 1297 Ninotaira, Hakone-machi, Ashigarashimo-gun, Kanagawa 250-0407
Official website: https://www.ten-yu.com/