9-19-2017: Many updates and improvements made.
This might be legal to build some places with no permit. The square footage is slightly under 200 sq ft.
The sofa is an Innovation Living Cassius Deluxe which flips out to be a guest bed (full). Move the sofa 20' along the red axis towards the front of the house to show the sofa turned into a bed.
The table is a flip up mounted by the sofa on the wall.