We had a great stay in Francesco's apartment. Comfortable and spacious, super clean, a crib and high chair was provided for us (there's another chair for slightly older children too). It's located between the Valle dei Templi and the city center and we walked to both, though there's a bit of uphill walking involved, which you could probably avoid by using the buses that run through the street. Communication with Francesco was super easy and he was there on arrival to welcome us to the place.