We used Google Translate to understand the booking page on one screen window with a other window open on the site in Japanese. Filling in the reservation form boxes was straightforward except for the one where you have to enter your name in Chinese. Again we used Google Translate to create a Chinese name transliteration and pasted that in. We looked up international dialling patterns online as if we were dialling our own number from Japan and used that along with email address for contact details. At the bottom of the form was a space for comments so we put a respectful short message in Japanese (again using Google Translate) followed by the key elements of the booking in English. The reservation form was accepted (be prepared for an, 'are you sure you want to send this' message after you click on the submit button. The next day we received a clear message in English from the hotel manager confirming that the reservation could be made if we sent credit card details. We did and the reservation was made. We are looking forward to visiting and are expecting an experience that is special precisely because it is very Japanese rather than because it conforms to international norms. In that sense the hour it took us to figure out all of the quirks of the website were the first part of the whole experience! Hope I haven't spoiled that for you too...