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KAI Poroto
Shiraoi, Hokkaido, Japan · KAI by Hoshino Resorts · Core Luxury



Hiroshi Sambuichi designed KAI Poroto, opened in 2022 at Shiraoi on Lake Poroto, around cone-shaped communal bathhouses that honour indigenous Ainu architecture. Its 30 rooms sit by the water, some with private open-air geothermal baths, and Ainu motifs run through the interiors. The Upopoy National Ainu Museum is a minute's walk, so a stay is also an introduction to the Ainu of Hokkaido.
- 42 rooms
- Opened 2022
- Neighborhood: Lake Poroto
- Architect: Hiroshi Nakamura (NAP Architects)
About KAI Poroto
- KAI Poroto opened in 2022 with 30 rooms on Lake Poroto in Shiraoi, designed by Hiroshi Sambuichi.
- Cone-shaped communal bathhouses over the lake honour Ainu architecture, and Ainu motifs run through the interiors.
- Some rooms add private open-air geothermal baths, and the Upopoy National Ainu Museum is a minute's walk away.
History
Hoshino Resorts opened KAI Poroto in 2022 on Lake Poroto in Shiraoi, Hokkaido. Architect Hiroshi Sambuichi placed a cone-shaped communal bathhouse over the water. The hotel is a short walk from Upopoy National Ainu Museum.
The setting
3 km from Shiraoi Sendaihan Jinya Ruin.
Restaurants and bars
- KAI Local Flavors kaiseki course (semi-private dining rooms) — Restaurant · Kaiseki, Hokkaido local ingredients
- KAISEKI dinner — Restaurant · Kaiseki
Experiences
- Moor spring bathing at Sankaku-no-yu and Maru-no-yu — Bathing in alkaline moor spring water at the cone-shaped Sankaku-no-yu, with baths overlooking Lake Poroto, and the cave-like Maru-no-yu.
- KAI Cultural Discovery: Sachet Amulet Workshop — Guests craft their own sachet amulets using the Ikema plant and other herbs, wrapped in a bag with Ainu patterns.
- Kaiseki dinner with local seafood — Dinner of local seafood such as crab, botan shrimp, scallops and salmon, served on dishware inspired by Ainu craft traditions.
- Kaiseki course meal using local ingredients — Kaiseki courses served in semi-private dining rooms, including a crab and scallop hot pot with bouillabaisse-style soup.
Amenities
- Onsen
- Pet-friendly
- EV charging
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