I stayed for 5 nights in Carolin's flat. Her flatmates were really lovely and passed on many tips on galleries in Berlin I should visit. I felt happy to use the communal spaces and the kitchen/bathroom had everything I needed. I had a lot of privacy in the space and the bedroom was very large with a nice atmosphere, along with a really cute balcony. The apartment is located quite close to the train, both U and S as well a few grocery stores. The area directly around the apartment is nice and quiet with lots of hidden gems - I found a lovely cafe with great coffee and a bakery close by. I would definitely recommend Carolin's apartment if you are looking for a convenient and quiet place to stay in Berlin.