You took your keys out of your heavy jacket pocket, then opened the door. You climbed the wooden stairs, only two floors of stairs, until you reached the level of your apartment where you opened your door and did not close it behind you for obvious reasons. You placed your bag on the couch, and five seconds after entering your apartment, he entered and stood in one of the three places he had chosen. He never took the place in the hall leading to the front door, he just stared at the wall