Simona's flat is perfectly positioned for exploring central Palermo - you're not more than 10-15 mins walk from any of the sights you might want to see. The flat is lovely - great little balcony at the back where we enjoyed a morning coffee from the flat's Nespresso machine, a choice of two good bathrooms and all the things you would need to cook meals at home. Parking is available on the street for 5 Euros per day (you need to buy a ZTL pass from the newsagents/shop around the corner).
One thing to bear in mind is that there is a lot of street noise in the front (largest) bedroom, so bring earplugs!