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.
5 Amazing Space Saving Ideas for Small Bedrooms -A small bedroom if designed smartly can also serve as a space where you can sleep, work, sit and store things. -Raise the Bed and Utilize the Space Underneath .
If you have the wall space in your RV gain two extra sleeping spots, with this space saving Bunk Bed Gadget. Like the wall in garage of toy hauler RV separating living area. How about extra beds for the kids at the cabin