There are a lot of advantages: price, location, staff (an employee with not very good English may be on duty during the night shift).
A possible disadvantage: depending on where the windows of the room will go out, the condition of the plumbing, the configuration of the room itself. They are all very small, very, very small, but they differ in the thoughtfulness of the space.
Convenient location, close to metro, tram, bus. The room is clean. The size of the room and bathroom is the same as usual in budget hotels in Hong Kong. But for this price, it's hard to find a room with its own bathroom. I recommend.