Stefan is a realy great guy, helped a lot. The place is just great, very clean, and with this "home vibe". Situated in a realy nice and quiet neighborhood, u can take a walk to city center or just get one of the many buses to get there, also just 5 min walk, and there is a underground station.
But the apartment... it's just great, trust me! Don't hesitate, just book it, it's a bargain.