Great location just outside of the tourist area meaning affordable restaurants and bars in the neighbourhood, but not too far out - 10-15 minutes walk to both termini station and the colosseum depending on age (our group was 6 - 77 years). Supermarkets and the Fassi gelateria(!) one block away and easy access to 2 metro stations. Apartment was comfortable and bright, with a nice little kitchen and laundry room, our family felt very much at home.
Any queries we had were answered day or night, and we even got some helpful information from Paolo and Martyna regarding transport strikes so we could organise our plans around this. The top floor location gives a nice view over the neighbourhood, but keep in mind the stairs (as described) if you're not as agile as my father-in-law: they are wide, marble stairs in an impressive building so perfectly safe, there are just lots of them!