I had the perfect stay at Katja's! Communicating with her was easy, checking in and out was easy, the apartment is very, very beautiful, the neighborhood lively with many bars, restaurants, and shops, while the apartment is really quiet. I loved the balcony and that so many great places in Mitte and Prenzlauer Berg are in walking distance. The apartment is also close to many public transport options so it's easy to get to any other place in Berlin as well. Thank you, Katja! I'd love to come back again.