I’ve been working for a while on a room that you can use for pinups or kinky games.
The room is 7x7x4 meters in the original scene. The wall panels are 1×0.5 meters large. This means you can lower the ceiling by 0.5 meters to match the side walls. You can move the walls sideways by 1 meter to make the room smaller.
If the height is not enough you can duplicate the 4 walls and put 4 meters up. This gives the room a height of 8 meters.
The product has been designed to use only a few polygons and therefore render faster. Most of the details come from the textures alone.