Location, location, location! We (a group of 4) stayed at Piazza Campitelli for 4 nights and absolutely loved the location. You're walking distance to all of the main attractions in Rome and a short cab from a few. The Jewish Ghetto is so cool and lively but still quiet when its time for bed. Being close to Trastevere (the best neighborhood for food) was a huge plus. The apartment is a great representation of old-world Italian design, and the AC worked perfectly in the Roman heat, which is hard to find in Italy!