We stayed at Mariano’s for 10 days and we had a great stay in Mondello. Mariano is a really good host, really quick to answer and available if you have a problem. The apartment is handy and about 10 minutes to the beach by walk. There is a supermarket 5 minutes away and great places to eat proper Italian/Sicilian food. I loved the restaurant La vecchia masseria and the blue bakery Galatea. The bus stop to Palermo (bus 806) is also 10 minutes away and comes every 10 minutes. Anyways, I absolutely loved Sicily and would recommend you to come.
Grazie Mariano :)