Kristina is wonderful host. She is so quick in response, and alway very helpful and nice.
The room was very nice and clean. The location is safe and close to the bus stops including the one that goes to Tegel.
The only thing was I actually heard people waking, carrying suitcases and opening doors sometimes from very early morning, as the room is along the hallway, so if you are sensitive for that kind of things, I recommend to bring earplugs :)
Other than that, it was very nice staying there with such reasonable price.