Aggi was an extremely nice host. She wasn't there when we first arrived but had arranged for a friend to let us in. Check in went smoothly, everything was clean and ready for us. The apartment is on the twelfth floor (there is an elevator) that gives a great view of Berlin. The location of the apartment is hard to describe because Berlin is a very big city with lots to see in many different directions. Most attractions (Dom, Brandenburger gate and central station) are within 30 minutes walking. We felt very much at home here and would recommend!