Betty and Christof were friendly, welcoming and accommodating. The apartment was small but suited our family of four very nicely and was located in a really interesting area of Berlin 2 minutes from a U-Bahn. We were out exploring the city every day for 5 days and it was a pleasure to return to the flat situated so closely to supermarkets and great value middle Eastern restaurants (€13 for 2 falafel wraps and 2 chicken Shawarmas!). We would recommend this place, and indeed the city of Berlin, to anyone.