The ordinary hostel is 50 dollars a day, you go to the point of Phoenix, a little bit above the south door of the University of Hainan KFC, one room, one bathroom, a small kitchen, 80 or so a day. Haida around are very safe, this you rest assured. The school library next to the hotel on campus. Slightly more expensive, next to Dongpo Lake. If you enter the school from the east gate, you can see it when you pass by the school bus. There are also a lot of hostels at the north gate, it was 48 a night years ago when I was still in school, I don't know now. Good luck with the gold list!