My brother and I had a great stay at Rosi and Gabriele's place. We arrived early and were able to drop off our bags so we could explore the city before the apartment was ready for us which was a great help.
In my opinion the actual apartment is bigger than the pictures which is a nice surprise. Very good location so many good restaurants and bars in the area (but the flat itself is very quiet).
Would definitely recommend to anyone visiting Palermo for a few nights.