Raiden Resort & Spa — Private Coastal Retreat in Western Hokkaido

Coastal Mountain Retreat
雷電 Where sea,mountains, and Japanese spirit come together
Iwanai offers a boutique refuge where the sea, mountains, and Japanese spirit come together. From mountain trails and ocean cliffs to local bars, restaurants, and seasonal festivals, guests are invited to experience both the quiet beauty of nature and the warmth of Japanese culture.
Where the mountains meet the sea, discover one of Hokkaido's most exclusive hidden retreats.


18 Unique Rooms & Suites
A Calm Placeto Return To
Each room offers breathtaking views of either the Sea of Japan or Mount Iwanai, with every season revealing the untouched beauty of the region. Cherry and mahogany wood details, together with teak flooring and furnishings and washi paper accents, create an atmosphere of understated elegance and a gentle sense of Japanese warmth.
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Culinary Excellence
Dining &Bar
Hokkaido's four distinct seasons are deeply connected to the concept of旬(shun) — the appreciation of ingredients at their natural peak. From Shiokaze Restaurant's refined Japanese cuisine to the Raiden Bar's signature cocktails with sweeping coastal views, each experience reflects the rhythm of the seasons.
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Wellness & Leisure
Spa &Wellness
Overlooking snow capped mountains, natural seawater hot spring baths are complemented by traditional Japanese oil and stone treatments, a pressurized oxygen capsule, and a complete wellness journey rooted in Japanese tradition.
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Adventures & Culture
Experiences
Skip the lift lines and chase untouched powder through expansive alpine bowls and old growth glades. On a typical day, you'll ski up to 5,000 vertical meters of pristine descents; there's no better way to experience Hokkaido's legendary snow.
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