A view from the entrance.
The Dressing Room is found through the north east door on the third floor. In the room there appears to be a lounge and nothing useful. There is also a door to the Bedroom and is the only way to go to the other side of the corridor due to the rotten floorboards.
Strategy[]
After a few seconds in the room, a stronger version of a Ghoul will come through the door from the hallway to attack you by. One strategy is to enter the room and immediately push the desk towards the door to block him. Now you can safely kick him (spacebar + down). Another strategy is to simply close the door and avoid him altogether.