We had a great stay in the apartment of Federico. The pictures describe it very well. It is very modern and well organized. Very sunny as well. located close to the theater there are dozens of restaurants very close to the apartment. We stayed 3 days and we could taste several of them. Federico was a excellent host - he helped us with the luggage and the parking (on the small square) and always very quick to answer to emails or sms. He provided us with maps of local attractions and restaurants.
A very nice detail: the apartment was filled with coffe, water, pasta and biscuits which we found very helpful.
Again I defintely recommend Federico apartment for a short stay in Palermo.