This may be kinda silly but in the context of the author’s quote above, it made me think that the occupant of that room had somehow found a way of conceptualising a space where they could be free from the cramp of the apartment, which is why the building in that world is only half-formed / being destroyed?

And that made me sort of think that when you see the Gate in the other apartment building, only where it’s too tiny to go into and on a table, then the owner of that other apartment wasn’t able to escape in the same way by losing themselves in their imagination. And that made me sad.