Francesca's place is truly in the middle of the historical district in a funky side street that's close to *everything* -- I was in Palermo for a big art event and I expected I'd have to travel far to get around but could reach everything on foot. Really pleasantly surprised.
The place is simply furnished but perfect and spacious for two people, fast wi-fi, huge kitchen, supercomfy loft bed (I wasn't sure I'd sleep well on it but I really did!). Watch out for automatic air conditioning (it goes on by itself and can get pretty cold in 23-degree weather, could imagine in high summer it's more useful) but it's easy to turn off with a remote.
Francesca was wonderful in keeping in contact -- we didn't meet her as this place has a self check-in (which I have to say is incredibly convenient), but before arrival, and every day during the stay she made sure things were superclear and checked in to see how things were going. She also offered local tips for food and sights (books on Palermo are also in the apartment, as is a map). Everything was very very easy and I felt looked after. Also: GREAT value for the price. Thanks, Francesca. Your place exceeded our expectations.