This is another example of a layout that would be easy to install in a studio apartment - a loft bed with stairs would be a cheaper and nicer space saving solution than buying a Murphy bed. Maybe even in a small bedroom.
Loft bed from the Swedish company Compact-living. The concept is particularly great for a small or tiny house because it eliminates walls below. While the ladder doesn't look super fun to use the lighting and bed solution is innovative and fun.