We spent three nights in Djuneid's apartment and it was lovely. The room is spacious and the bed really comfortable! The apartment is very well-decorated with amazing artwork, made by our host. The whole place was sparkling clean. Djuneid is very polite and thoughtful, he gave us excellent recommendations and even invited us to his art studio which is a must-see. He wasn't around too much, so we ended up having the apartment to ourselves for two out of three nights - which was really nice.
The location is pretty central, with several sightseeing locations (like the Berlin Wall memorial), hip cafes, supermarkets (including an organic produce supermarket), shops and Alexanderplatz all in walking distance.
Overall, we definitely recommend Djuneid's apartment, both for the amazing interior and its location but also for the kind host.