The 'Mobile Bedcube' by 'Du côté de chez vous' is a giant box on wheels that allows users to move their bed around for multiple functions and levels of privacy. The box comes in a variety of colors so one can customize to their taste. One side of the cube has no wall, allowing for one to turn it towards the open space and use it as a couch for guests.
To get more privacy, all you have to do is rotate the cube to have the wall facing out. The inside of the wall even has a projector screen so you can watch movies while lying in bed. This design would be perfect for an open apartment with lots of open space.