We spent 4 fantastic days and nights at Palermo roof.
The terrace is really amazing...we spent a part of the night outside looking at the lunar eclipse and stars.
The apartment was very comfortable (especially the bed). It was very clean, and the flat allow to have a very big space, within the Palermo City center..we did not have a car and managed easily our visits in and around Palermo.
Just be aware of the 4 levels without lift.