To start with the neighbourhood , it was my first time in Berlin and I realised that this neighbourhood was just one of the best in Berlin ! Holger's apartment is located on a very nice and quiet street, but then you have a very good places around to eat or just drink beer and chill . The flat itself is very peaceful and positive, as soon as we entered we just felt like home which I think is so important while travelling . It was very clean and airy.
And as well, a very nice vinyl collection was one of the pleasures of this place.
We didn't meet with Holger but our communication via messages was very positive.
I truly recommend you Holger's place ! I am sure it's one of the special places in whole Berlin.:)