My dad, sister and I stayed at Michele's place and loved it.
The location is great and with bus 123 you can get to the main station quite easily and from there conquer Berlin. The street is nice and quiet and there was a restaurant in the corner with delicious food and great service "Gianni" is the owner and the place is named after him.
As for the apartment itself, it was comfortable clean and spacious. I particularly enjoyed the choice of lighting and the pieces of art/decor. I also liked that the furnishings were of high quality and didn't seem like mass produced furniture...
All in all, if we had the good fortune of visiting Berlin again, we wouldn't hesitate to rent this place again.