We enjoyed our stay at Caroline's flat very much. The Check-in with her friend was very easy and pleasant. The flat itself ist beautiful, cozy and very clean, with many nice details. You can walk to the city center within 20-25 minutes, but there is a tram and even a metro station only a fews steps away. The Karlin area is really nice, with lots of small cafes and restaurants. I can only recommend! (especially for people who love the minimalistic, eco-friendly lifestyle)