I´d try it. I actually like the idea that you have your own little space. When you stay in a ordinary hostel there´s really no privacy, but this looks cozy.
I´ve tried something similar in London once, but them "boxes" were made out of wood.
I can´t help but to wonder what Ennis and Jack would think of these, though
Maybe they wouldn´t ever complain about The Siesta motel again, after having tried to get it on in one of these