The apartment is big, clean and beautiful!
Djuneid is an artist and the art in the apartment probably better that some of the small galleries in the city. It actually felt bad to go back to my boring walls at home (:
The location is at one of the centers of the city: you have everything you need around. I think it will be great for new visitors or people who want to spend few days in Berlin as it very easy to get along around, without being noisy or too crowded.
Djuneid himself is a great host and always made sure I feel comfortable. His space is beyond a big curtain in the living room, but both of us weren't in the apartment much and I have a lot of privacy so didn't mind at all.
Overall I enjoyed my stay and recommend it