Bedroom: empty flat
You just got the keys and there is nothing in it.
What gets in the way
An empty space cannot be pictured: with no furniture, you cannot judge a size, a colour or how you would move around. And in a bedroom in particular, the bed eats the room and leaves two corridors.
What seeing it first changes
You see the room furnished before buying anything, so you stop getting dimensions wrong. What moves is the bed, the bedside tables and the storage — the walls, windows and doors stay exactly where they are.
Try it on your bedroom Your photo, your walls. Not a catalogue image.