Office: 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 an office in particular, it is a guest room in disguise, or a corner of the living room.
What seeing it first changes
You see the room furnished before buying anything, so you stop getting dimensions wrong. What moves is the desk, the storage and the task lighting — the walls, windows and doors stay exactly where they are.
Try it on your office Your photo, your walls. Not a catalogue image.