On HGTV episode HSSBS #113 - Little Home, Big Results, they showed a wall bed on rollers. One side had exposed shelving the other was a bed. It rolled out of the wall and around 180 degrees and reinserted into the wall unit. Where I can obtain one of those wall units?
Good Question. With a complicated action like this, it might be a Flying Bed. We haven't seen this apartment, but for more info it looks like you should contact the homeowner and architect:
Architect, Dennis Wedlick Architects
If someone has the answer, please post it below.