About ground floor room only:
Large, transparent doors from the corridor, only covered with a thin cloth.
Every person using the front hostel door makes a noice that wakes everybody up, even if tries to be quiet. Every incomer also switches on the light on the corridor, so the bedroom is filled with sudden light.
High level of noice from the street. The apartment has no windows, but two large window-doors, one to the corridor and one to the street. The door to the street was a former shop main door and is secured with 3 layers of doors, two-window ones and one iron cover. Nevertheless you sleep about two meters from the cars on the street, which stop on the nearby traffic lights.
Ground floor room with bathroom is spacious because it is a former shop. Rooms upstairs are much, much better.
Aircondition included in price. Good location in the city center, but check it on the google street view.