27 seaside ryokans
Each one is within 400 m of the sea.

Ama no Hashidate Monjusou
A refined traditional inn at the base of Amanohashidate, Japan's 'Bridge to Heaven'.

Atami Yuyado Ichibanchi
An Atami Station inn since 1946 with two own sources, free-flowing large and private open-air baths.

HOSHINOYA Okinawa
One hundred ground-floor, sea-facing rooms behind gusuku-style walls on the Yomitan coast, with a hot spring bath and villas that have their own pools.

HOSHINOYA Taketomi Island
Forty-eight villas built to Taketomi Island's own rules, with coral-sand yards and low stone walls, a short ferry from Ishigaki.

Hyakuna Garan
A cliffside adults-only resort in Nanjo with about 17 sea-facing rooms, six of them with rooftop open-air baths, and a Michelin Key since 2025.

IKI RETREAT by Onko Chishin
IKI RETREAT's 12 rooms each have an ocean-facing open-air bath filled, undiluted, from a spring about 17 times more mineral-rich than the minimum for an onsen. The Michelin Guide's 2019 Fukuoka, Saga and Nagasaki edition gave it five pavilions, its highest ryokan rating, and dinner features Iki beef, sea urchin and abalone. The jetfoil from Hakata Port in Fukuoka takes an hour, and the inn's free shuttle must be booked ahead.

Iseya
All 24 rooms at Iseya have a private hot spring bath facing Tachibana Bay, filled from an Obama Onsen source that leaves the ground at 105°C and is cooled for bathing. The inn was rebuilt from scratch and reopened in October 2019. Dinner centers on Nagasaki wagyu, Unzen pork and fish from the bay.

Itsukushima Iroha
Itsukushima Iroha (formerly Kurayado Iroha) is a beautifully renovated ryokan on Miyajima's Omotesando Avenue, just a 5-minute walk from the UNESCO World Heritage Itsukushima Shrine.

Izu Atagawa Onsen Miharuya
Izu Atagawa Onsen Miharuya is a charming 10-room ryokan located just one minute on foot from Izu-Atagawa Station on the Izu Peninsula.

Keishokan Sazanamitei
A 26-room harbour-front inn at Tomonoura, renovated in 2024, with sea-facing open-air baths including a boat-shaped one.

Kinsuikan
Kinsuikan is a historic ryokan on the sacred island of Miyajima (Itsukushima), a UNESCO World Heritage Site just a 3-minute walk from the iconic Itsukushima Shrine.

Komatsukan Kofutei
A bay-front Matsushima inn whose top rooms have open-air baths facing the islands, 40 minutes from Sendai.