The apartment is easy to get to with public transport options close by. It is by the river which you can walk along - we did this when visiting the Reichstag Franzi left the key at a shop across the road and we had no problems collecting this. The apartment is big enough for 2 people with a functional bathroom and well equipped kitchen. The only thing which could have been improved would have been some hanging/drawer space for clothes - all of the ones in the apartment were marked as private. We didn't actually meet Franzi, but she checked via Airbnb to see that everything was ok. We had a great time in Berlin and would have no hesitation staying here again if we came back