Reservations are required for private bath/onsen. Reservations can be made by contacting the ryokan prior to arrival, using the contact information on the booking confirmation. The Japanese Ministry of Health, Labour, and Welfare requires all international visitors to submit their passport number and nationality when registering at any lodging facility (inns, hotels, motels, etc. ). Additionally, lodging proprietors are required to photocopy passports for all registering guests and keep the photocopy on file. Before booking, guests have to look up for the specifics of the hotel on the hotel official website.