Re: Small apartment with 24 rooms..
I have an idea for a pocket door inside the bus, just a matter of adapting the idea...
All you have to do is start by making a cap that fits the inside roof of the bus and comes down just far enough to be flat across the bottom. Build your "Book Cases" that fit right up against the walls to help hold up the outside ends of the cap, and install your rails in between the book cases. Add any "Sliding Cases" that you want to the slides.