I stayed here for a week during a visit to Okayama University of Science. My Japanese host made the booking, and it might be difficult to book directly as like most Japanese hotels not much English is spoken, though I did meet a couple of staff with good English, so a booking by FAX might work. Expect to pay cash upfront for your stay - very reasonable prices (about 7000 yen per night).
It's a short walk from the main JR station for the Shinkansen or the bus station for the airport bus from Osaka, and it's easy to reach the centre of town and the Koraku-en Garden if you fancy a bit of tourist time. A comfortable room with a good breakfast (pick up your breakfast ticket when you collect your key each evening); the breakfast is Japanese style but you soon get used to that. No WiFi but a cable is provided for a LAN connection. Recommended. More