Three of us stayed in Guillame's flat for six nights, and really liked it. It is as described, very clean and nicely furnished and comfortable. The best thing about this place is the location with HEAPS of nice bars, pubs, cafes, restaurants very close (not noisy at all though). We went to cafe dots across the road nearly every day, they had great coffee and also tried heaps of the turkish and lebanese food shops close by aswell. The kitchen is quite small - no oven, toaster or microwave so you are a little bit restricted in what you can cook but there are hot plates. Beds were very comfortable aswell. The apartment is up 3 flights of stairs so this may not suit some people? I would recommend this place for a couple of a couple of friends wanting a good base to explore Berlin and Neukollen from.