Kaiyutei: A Beachfront Onsen Ryokan in Kawazu, Izu

There's something special about a ryokan where you can hear the waves from your room. That was exactly the experience at Kaiyutei (海遊亭), a small hot spring inn in Kawazu Onsen, on the Izu Peninsula in Shizuoka — where I spent a one-night, two-day stay starting July 19, 2026.

Address: 64-1-1 Hama, Kawazu, Kamo District, Shizuoka 413-0513

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Stay facts: ¥65,000 (about $400) for two adults, one night with two meals included · Zero-minute walk to the beach · Free draft beer at the in-house drink bar (one glass per person) · All rooms ocean-front

Arriving at Kawazu Station

The journey started at Tokyo Station, where we boarded the Izukyu Odoriko limited express bound for Kawazu — a scenic 2.5-hour ride down the Izu coast. All seats on this train are reserved, so it's worth booking in advance to guarantee a spot, especially during peak travel season.

Lunch Before Check-In: Izu Kaisen Donburi-ya

Before heading to the ryokan, I stopped for lunch just one minute on foot from Kawazu Station at a local seafood spot called Izu Kaisen Donburi-ya (伊豆海鮮どんぶりや). This place is known for its signature Izu Kaisen Don — a rice bowl piled high with fresh local seafood — and I ended up going all in on the seafood theme.

Alongside the Izu Kaisen Don, we also tried the wasabi don (a rice bowl built around fresh wasabi), the fry of the day, and, for the truly seafood-obsessed, raw abalone and raw sazae (horned turban shell). Everything was clean, fresh, and clearly sourced straight from the local coast that morning.

Izu Kaisen Don, wasabi don, the daily fry, and a plate of raw abalone and sazae — a serious way to start the trip.

Arriving at Kaiyutei

After lunch, it was a short trip to Kaiyutei itself — a beachfront ryokan with zero walking distance to the sand, tucked into the quiet Kawazu coastline. All of the inn's rooms face the ocean, and the whole property has that calm, unhurried feeling that's hard to find outside of small regional ryokan like this one.

A small, understated ryokan facing straight out onto the Kawazu coast.

Inside, the inn has a comfortable common area with a self-serve drink bar, including free draft beer — one glass per person — a small but very welcome touch after a day of travel.

The in-house drink bar, complete with free draft beer for guests.

The room itself was simple but comfortable, with that unmistakable ocean-front view that this ryokan is known for.

A quiet, ocean-facing room — no distractions except the sound of the waves.

The Open-Air Bath

No stay at a Japanese onsen ryokan is complete without the rotenburo (open-air bath), and Kaiyutei's did not disappoint. Soaking in the hot spring water while listening to the waves just beyond the rocks is the kind of experience that makes the whole trip worth it on its own.

The open-air bath, with the sound of the sea just beyond the rocks.

Dinner and Breakfast

Dinner leaned heavily on the bounty of the Izu coast — a seasonal, seafood-forward kaiseki-style spread that showcased the same freshness we'd tasted at lunch, just elevated into a full multi-course meal.

A seafood-centered dinner spread, built around the best of what the Izu coast had to offer that day.

Breakfast the next morning was just as satisfying — a well-rounded Japanese-style spread that set us up perfectly for a final morning by the sea.

A hearty Japanese breakfast to close out the stay.

The Beach, Right Outside

There are no photos of this part, but it might have been the best part of the whole trip: because Kaiyutei sits directly on the beach, we were able to walk straight out and spend time playing in the water before checking out. Having a real, swimmable beach literally at the doorstep made the whole stay feel like a proper seaside getaway, not just a hotel visit.

The Staff

One thing that stood out throughout the stay was the hospitality of the Japanese staff — attentive without being intrusive, and genuinely warm in the way that only a small, family-run ryokan can pull off.

Final Verdict

At ¥65,000 (about $400) for two adults for one night with two meals included, Kaiyutei delivers real value for a beachfront onsen experience: an ocean-front room, a proper rotenburo, a seafood-driven dinner and breakfast, free draft beer, and a beach you can walk straight out onto. Pair it with a stop at Izu Kaisen Donburi-ya near Kawazu Station, and this makes for one of the most satisfying quick getaways from Tokyo.

Would I go back? In a heartbeat — next time with more time to spend in the water.

📍 Kaiyutei — 64-1-1 Hama, Kawazu, Kamo District, Shizuoka 413-0513