Ichino Yu Onsen is a public day-use bathhouse in Kinosaki Onsen, Hyogo. Dating back to the Edo period, it is known as the “Number One Bath,” praised by physician Kagawa Shōtoku for its healing properties. Its signature feature is the atmospheric cave bath, carved into natural rock, alongside traditional indoor pools.
It is fully tattoo-friendly, welcoming guests without restrictions. Foreign visitors benefit from a simple walk-in system, affordable pricing, and English-friendly guidance at reception.