This looks like an art installation to me rather than a genuine place someone has been sleeping but pretty cool1 a secret bedroom1 in the Berlin underground system.
Reminds me of a similar art prank I saw in Stokey one time, either a picnic or a dining table laid out on top of a bus stop - you couldn't see it from ground level. Sure I had a picture of it, can't see it now though.
Paul Clarke's blog - I live in Hythe near Folkestone. Wed to Clare + dad to two, I am a full-stack web developr, + I do js / Node, some ruby, python, php ect ect. I like pubbing, parkrun, eating, home automation + other diy jiggery-pokery, history, tree stuff, Television, squirrels, pirates, lego, and TIME TRAVEL.