Generally, if you arrive 3-4 days earlier than the notice, you can easily grab a dormitory for four (go directly to the guidance office of your college and tell the guide that you want to live in a dormitory for four).
Agricultural University has only four dormitories, all of which are six-person dormitories (male dormitories). Girls don't have a dormitory for six people. I think a six-person dormitory is the best. Although it is a bunk bed, it is very spacious. Everyone has a big cupboard.
Dormitories for four people all have desks, 1200/ year.