I would fully recommend this Airbnb to anyone wanting to stay near Mondello Beach.
Marco is probably the most accommodating host I have had to date from Airbnb (and I have had some other excellent hosts in the past!). He is quick to reply and is very welcoming, he made our stay very special.
The apartment itself is very nice, clean, and accurate to the pictures. It is a short walk to a stony beach or a longer (10/15 minutes) walk to the sandy Mondello Beach.
Right outside the apartment is a café which does nice pastries and coffee as well as a bus stop which goes either towards Mondello Beach if you don't fancy walking or towards Palermo which takes around half an hour.
Overall a fantastic place to stay.