Zao Onsen Dairotenburo

Picture is of the entrance, no cameras are allowed in the onsen. Very rustic and traditional, yet comfortable and satisfying onsen nestled in a corner of Zao Onsen Town. Natural hot water flows down from the mountain, with a strong hint of sulfur and other minerals. Definitely good for the skin and body. Entrance fee was 700yen, with towels costing I think 300yen extra and lockers 100yen. Try to bring your own towels! I visited around 5.30pm and stayed till 6.30pm, they were still open. The air was cool as it just rained, and the warm-but-not-too-hot onsen waters provided a comfortable contrast to the cool crisp air. It was a truly relaxing experience as I breathed in the fresh mountain air while watching water rush through the onsen and down a small stream, while being immersed in the hotel water myself. Definitely recommended for daytrippers. Easily among my top 5 onsen experiences.

You can't come to Zao Onsen without taking a dip in this iconic outdoor Onsen which unfortunately is not open in winter once the snow falls. The Ladies' have an overhead covering for one of two baths whilst the male baths are terraced (with waterfall massage spots from the top one to the second. The Onsen is located between the Sunrise and Nakamori ski slopes. Note that there are no freshwater washing facilities.

Easily one of the most amazing onsens I have been to. It’s tattoo-friendly! Open air in the gorgeous mountain under a canopy of trees with a natural spring stream off to the side. It’s basically paradise. They channel the stream into the baths. The sulphur scent isn’t too strong either which can sometimes be a turn off. It’s also really cheap. Don’t hesitate. Will cherish this memory! Just perfect.

A wonderful setting with really warm water across two pools (for the males) and separate facilities for females. The temperature varied between the two pools. The staff were friendly. The families are basic. Unfortunately, to go to the toilet, one has to exit the baths into the car park. No clothing was worn in the bathhouse.

This onsen is surreal. It's surrounded by lush nature and its such a peaceful experience. I went in autumn and getting undressed outside (the are no indoor changing rooms) was not too uncomfortable. It's probably a bit chilly in winter, but nevertheless much worth it. One of the best rotenburo I've ever been to!