We have 5 days in Rome in early July. We have tickets for the Vatican, Ancient Rome tour (coliseum, palatine hill, Forum, Pantheon etc), and Borghese Gallery and Gardens, and a food tour covering the main fountains and Piazzas in Centro Storico. At the moment, our Sunday is open. I was thinking of exploring Trastevere and the Ghetto, but I'm open to suggestions. Any advice for an open Sunday in Rome?