Mariangela's flat is a great place to stay when visiting Palermo. The flat is located in Politeama, which is easy to get to from the airport (via coach) and is a short walk from the historic centre of the city. There are a lot of great bars and restaurants in the area, which Mariangela and Pio will happily advise on!
Mariangela and Pio are great hosts - friendly, organised and ready with lots of suggestions about things to see and do. I would definitely recommend staying at their flat if visiting Palermo.