Maria's place is a wonderful AirBnB opportunity that I highly recommend. It is located in old East Berlin a few miles from Checkpoint Charlie and the Brandenburg Gate. We had a very pleasant bike ride all over the historic parts of Berlin on bikes provided by Maria. There are very nice river front pubs that are an easy walk from the place. It is very close to the local transit lines.
It is a cozy space so great for a solo traveler or two people who get along well with each other.
I also want to single out Maria as the best AirBnb host that I have ever visited with. She is attentive, pleasant and very helpful. She even did an upgrade to the WiFi network after I mentioned it was a little slow for my business needs. I suggest that you go out of your way to visit Maria's place!