The room is pretty big, bright and has a very beautiful view of art work and one of the first occupied art houses right across.
The location is pretty central, it's right at the beginning point of famous Friedrichstrasse, where you can see Checkpoint Charlie and good exhibitions.
I myself love exploring the cities on foot, that' why I walked to the popular tourist attractions and it took me 25 min to Museum Island and around 30-35 min to Memorial to the Murdered Jews, Brandenburg Gate and Tiergarten area.
Around the house there are cheap, and nice cafes and restaurants where you can enjoy different types of food and drinks. You can also find a grocery store and a pharmacy right across the house.
Barbara is a really nice host, we had long chats in the morning while having breakfast, she helped me out with everything, gave good tips for nice and cool spots, exhibitions, museums and galleries to go and see.
If I go to Berlin again, I'll definitely choose her place to stay and recommend it to everyone.