Sonja was very accommodating and provided excellent information. We had a great time and staying in the apartment made the weekend for us. We really felt like we had experienced Berlin. The apartment is very clean and bright. The location is excellent. Very good restaurants in the neighborhood. On the bus line for the airport. We walked around the city and it was fabulous. We'd really like to return at some stage. Thanks Sonja for being so helpful and thank you for sharing your place with us.