I stayed in Mauro's place with my husband and 1-year-old son for 3 nights in June. We were really happy with our stay.
The apartment is as pictures: pretty, clean and well equipped for a holiday. We found everything we needed and more. The location is good as well. It's walking distance from basically everywhere and there's a comfy restaurant right downstairs.
Mauro and his wife were very friendly and helpful. They were there to meet us when we arrived (they actually picked us up from close by as we couldn't find the address at first) and they gave us some good tips for Palermo.
All in all it was a good experience and I would recommend staying with Mauro to others.