This is a wonderful apartment for traveling with a small group. The bedrooms are comfortable and set far enough apart to allow for privacy. The living spaces are large and in keeping with Roman style. The terrace is wonderful, very peaceful. The stairs could be difficult for people with mobility issues; there are 40+ spiral stairs to get to the apartment, then another flight to the living areas and one more to the dining/kitchen/terrace. My husband and I had no trouble, but my father-in-law and his friend (both in their 60s) found it tiring after a day of walking around the city.
The location is fantastic, central to all the major attractions. We walked easily to Vatican City, Trastevere, and the Colosseum. The neighborhood, near the Campo dei Fiori, is always active but the soundproofing in the apartment is excellent. We were never bothered by outside noise.
Carlo, Camilla & Maria Teresa were great as well, very responsive to all of our questions leading up to our trip. I'd happily recommend this apartment to anyone staying in Rome.