I booked this AirBnB for my parents; they absolutely loved the location! My dad was so excited when he was telling me about how close many sites (i.e. Trevi Fountain, Pantheon, and Colosseum) were within walking distance. Marina was also such a great host and contacted my parents efficiently.
There are just two things to note: 1) in order to get to the space, you go up a set of really cute, but narrow spiral stairs, so if you have a lot of luggage, this space might be a tad too tight; 2) the shower and bathroom are really tiny, so the floor does get a bit wet. Other than those two things, my parents were absolutely thrilled!