This was in another language so I could not read it, but I think it would be easy enough to figure out. It is a pretty basic building with a slanted roof. It would not be hard to dress it up. I'm seeing a flowing curtain... plants... etc.
Pimp your bedroom: Ungewöhnliche DIY Nachttische für dein Schlafzimmer
If you've got the room, German beer garden table and benches are very now and emulate similar but more expensive designer products. Keep it minimal, with a few industrial or rustic accessories, for that spacious urban cool look.