Claudia sent comprehensive details through before we arrived which included info on how to get to the apartment from both of Berlin's Airports. The key collection was straightforward and easy and we we're given a brief tour of the property.
The apartment is lovely and as described. It was very warm (thankfully!) when we arrived and had everything we needed.
The location is fairly central and only a 5-10 minute bus journey/20minute walk from Potsdamer Platz.
There are plenty of bars and restaurants within walking distance, as well as a little super market for bread etc.
Due to the way the apartment is laid out in the block it feels very safe and it is very quiet.
I travelled with a friend but I would have no hesitation staying as a single, female, traveller.
It is a lovely apartment and would thoroughly recommend it.