This is considered the "gold standard" of bathing. It means the bath is constantly supplied with fresh, 100% natural hot spring water that overflows and is never recirculated or diluted. Popular Types of Japanese Baths
Many traditional Japanese bath houses number their private or public baths; this could refer to "Bath Room 13" at a facility known for its gensen water. Gensenfuro 13
In the annals of Japanese onsen culture, a Gensenfuro is the holy grail—an open-air bath fed directly by the hot spring source, without any heating or cooling interference from human machinery. It is nature in its rawest, most visceral form. Kaito, a travel writer for a niche magazine specializing in "Forgotten Japan," had heard rumors of a bath known only as "Number 13." This is considered the "gold standard" of bathing
Your small privacy towel should never touch the spring water; rest it on your head or on the edge of the tub. In the annals of Japanese onsen culture, a
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