We stayed for fees days in Mondello.
We were there in February, so it was no beachseason. The location just next to the national park wich is so nice for walks at the beach or up to the mountains. The beach with a lot of restaurant is in walking distance.
The apartment is not the lates one, but still ok. The terrace is super nice to enjoy the sun and the sound of the sea.
Isabelle and her mother are very helpful. So I can highly recommend the apartment.