I had a Lovely stay!
Sören was very accommodating, wen I found out I had booked the wrong day.
At my arrival Sören was not there but the pick up of the key was easy and I was pleasantly surprised about the free coffee in a lovely coffee place around the corner that Sören had arranged.
Sörens place is beautiful and located very central in my favorite neighborhood in Berlin. The bed was comfy and I slept like a baby.
Thanks again Sören!