Here is the room description in English, using the required prepositions.
On the left side of the room there are two wardrobes. Between them is a bed. Above that bed there is a shelf. There is also another bed nearby, and above it there is another shelf. On the right side there is a corner desk. Between the desk and the bed there is a balcony. Above the desk hangs a wall-mounted shelf. Next to the desk is a chest of drawers with clothes, and nearby there is a bookcase with books and toys. The entrance to the room is between the bookcase and the left wardrobe. In the middle of the room, there is a clear space for walking.