I am sorry. The number is just the room number, opening different doors take you to different numbers. The goal of course being to get to the bed. The game slowly distorts as you lose everything, this being primarily your memories. The notes distorted shows this fact as everytime you sleep you lose more of the note. The only interactables in the game are the doors, notes, pictures(there is only one found after a puzzle), boxes, trapdoors, and of course the bed. The story due to its premise is made to be formed from you implicitly putting stuff together instead of explicit information. I thought the gameplay was pretty clear, but I guess not for everyone. Again sorry