I went here the first time many, many years ago, but the review got lost. This is an above-average supersento. Seems like spring water is used in all the baths, but I am not sure about that. The water is not noticeable other than feeling gentle on the skin. There is a large selection of jet baths and the always enjoyable walking bath inside. Outside has 6~8 individual tub baths, some with carbonated water, and a large shallow rock-lined rotenburo. Good place.