Hi All~ I’d like to share with you a way of reserving Japanese ryokans which does not accept email booking or has no online reservation system.
I just booked Suimeikan Karukaya Onsen with the assistance of VISA Platinum Concierge service! If you have a VISA platinum card, you can make a simple registration and use their concierge service to help you make enquiry and reservation. They offer other travel helps too. For details, please check:
The link is for Asia Pacific. If you are from other regions, please search for the appropriate site accordingly.