One word: PERFECT! Jony is really caring and the apartment is incredible in each and every detail.
The beds are very confortable, there is a lot of closet space, very well decorated, the heating works well, the kitchen is totally functional. The location is very good too, theres a main avenue one block away, with metro and bus stations, and its like 5 min away in a cab from Palermo.
Definitely the best place I booked through AirBnb. Nothing to complain!