And It Moves!
The space is actually moveable. By watching the video , you can see that Fernando climbs up to enter the box and he pulls a lever to move the whole contraption towards the wall where a desk and chair are ‘floating’. Without the box attached, they seem completely random and without context. But once the moving box attaches to the wall, the home comes into place.
Source: Laughing Squid
It turns into a neat little home.