If you find yourself staying at Elena's apartment at Vicolo della Camponella, be aware apartment numbers are above doors on the right, hard to spot when you're in a taxi. The location itself is excellent, 1 minute walk to Castel St. Angelo, 20 minutes walk to the forum, 10 minutes walk to Piazza Navona and Pantheon. It was very quiet at night, which surprised me for Rome. Had a very pleasant stay, very clean and great hosts.