6, 4 people, the dormitory has no bathroom and a balcony. Six rooms: two bunk beds, plus two bunk beds. These two beds are bookshelves and computer desks, each with a wardrobe (2.2m high). Four rooms: four upper bunks, with bookcases under the bed. The specific distribution depends on the school, not sure. You can look for photos of girls on various forums of HKUST. It may have been taken in the dormitory.

(* _ _ *) Hee hee ...