Niitsu Onsen
新津温泉にいつおんせん
Small neighborhood bathhouse with oil-scented spring water
Day Use
YesClosed on Wednesdays, and also for a summer break and over New Year (exact dates not listed). Reviewers say the bath is drained and tidied about 10 to 20 minutes before closing.
There are no showers, and no soap or shampoo.
Bathing & Water
Uses natural hot spring water
Enclosed indoor bathing area
Policies & Services
Shower, wash stations, soap and shampoo provided
There are wash stations, but no shower, hot water, soap or shampoo is provided.
On-site or nearby parking available
About
A small bathhouse on an ordinary residential street, with one indoor bath and a few wash stations. There is no shower, no hot water at the taps and no soap or shampoo, so come washed or bring your own. The water is salty and a little slippery, and it smells strongly of oil, closer to diesel than anything you would expect from a spring. The smell clings to skin and towels for hours afterward. The spring came up as a by-product of drilling for oil, and the building opened in 1954. It still looks and feels like a neighborhood bath, busy with locals, and the people at the counter are happy to explain the water.
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Last updated October 26, 2026