I stayed in this resort for 2 nights just before Christmas 2011.
The resort are maintained very well. In fact, some renovation work was in process during our stay as a preparation for a few big festivals coming.
The resort are composed of quite a few facilities, including hot springs , theme park, theatre and man made lake. I bought a package compose of room stay with breakfast, tickets for hot spring , theme park/theatre. According to our experience, the hot spring are worth to try, there are many different kind of hot spring pond for u; the theme park is also not bad; while the theatre show is so-so.
Do avoid the weekend and public Holliday, otherwise, I'm afraid u will be disappoint in crowd everywhere.
There are many restaurant in the resort, the price is reasonable and the food quality is good.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC