I can only recommend staying at Casa Letizia. The location is fantastic, right in the centre but a peaceful haven if you need a break from all that city life has to offer. The flat itself is beautifully decorated. Letizia was lovely and really helpful, all the things she suggested like restaurants, gelaterias and activities were great. She even booked a taxi for us to the airport and when the taxi ran late she offered to drive us to the airport in case the taxi didn't turn up. We're already planning on going back.