Public Spa on the beach “Iso-no-yu“ — Local services in Higashiizu

A short 6-minute walk from Izu-Okawa Station on the Izu peninsula takes you to Iso Hot Spring. Once in the parking area, you must walk through a tunnel beneath the highway that feeds fresh, clean water to the ocean. The hot springs themselves are very small, fitting no more than about 10 people at a time, and segregated into male and female.

Costing only 500 yen, these hot springs are a great find. You can sit in the rock with views looking out onto the ocean. The baths are clearly for locals, with no additional amenities beyond a vending machine and a nearby (well-equipped) portable toilet.

I've now come here twice and spent hours hanging out in the hot water -- it's such a lovely place to be! As a bonus, if you feel like swimming, many locals swim by the hot spring, so feel...

Not so many people, outside. Soaps are restricted.

Although there are local old men fishing at the harbour about 200 meters away, but it should be far enough so that much can't be seen. Excellent way to soak yourself in "earth juice" a.k.a. onsen or hot...

(visited on 6/30 2025) if the port isn't too busy, I recommend going for a swim prior entering their onsen. onsen is super clean with outstanding ocean view. counter granny and locals...