We enjoyed our stay in Berlin, we loved the location and the amnesties, our friendly host, quiet neighborhood, easy access apartment, close to the U line and small shops, restaurants and bars.
One of the two negative points were about the lack of communication prior to getting there. No reply to either of the emails for more than 10 days made us almost cancel the reservation because we were afraid we might not be able to reach our host once we got there, but then we short-messaged Farsad on his mobile and he replied the next day, which was a relief. This was 2 days before our check in date. Once we got there he was actually very reachable, communicative and friendly. We got delayed by one hour because of our flight and when we were on our way to the address Farsad called us to check if everything was ok. He greeted us well and gave us all the information needed, very friendly and respectful.
The second point was that the place was a lot dustier than expected and the bed linen was not cleaned/changed which was my big disappointment.
I can cope with a messy place but not with used linen.
There is only one small area where to put one's things (on top of a small drawer so having a couple of chairs or some space in a drawer where to put some of the stuff would help).
Other than that, like I said Farsad is a very friendly host and the location is very convenient.
Overall we had a good stay in Berlin.