This place is very cozy and located in the heart of the old town. If you want to have the true Palermo experience, I think this is a great choice. Lots and lots of nice shops, street food carts, cafes, and restaurants within walking distance. Croissants with pistachio cream at Luka's Cafe were awesome. And they have the best gelato at Al Cassaro. The apartment is quite big and well-equipped. It was very clean when we arrived and the check-in went without any problems. The kitchen has everything you would need for a longer stay. And there is an air conditioner in the living room, which is great for the local climate.
The only downside of this place is the street noise. It's tolerable during the week, but on Fridays and weekends the party outside goes all night, so be prepared and get some earplugs with you.