We had such a great stay at Inga's place.
The location in Neukolln is great, easy to get a bike (or a taxi) from there to many places in Berlin. There are a lot of cool places, restaurants and bars around.
The place itself with the outside space in the garden was perfect for chilling after a day of walking around and before going out.
We were 6, two of us slept very well in the bed, the other 4 shared the living room and 2 sofa beds, they slept okay.
The communication with Inga was very easy, she was there to greet us. The place was very clean and well decorated. We definitely would go back there.