The apartment is perfectly located at Campo de Fiori, a colorful market with many cafes and restaurants and within walking distance to most places of interest. Yet the spacious and well equipped apartment is a sanctuary of peace and quiet because it is on the top floor of a 3-storey (no elevator) building and facing the backside of the market. A 10-euro taxi-ride will get you there from Roma Termini train station. Check-in and out are simple and smooth and the host is very helpful. The list of recommended restaurants and facilities is one of the best I have seen.
Highly recommend.