My wife, 2 teenaged daughters and I stayed at Susanna's place for 3 nights. We all loved the spaciousness of the living room, kitchen and dining area, the two bedrooms and two bathrooms. The apartment is in a low rise building that is very quiet, and well situated, being close to a supermarket, pharmacy and restaurants and a great café on the corner where we were introduced to Italian coffee and a wonderful array of pastries! It is relatively easy to get to Roma Termini (the main train station) via a short bus ride or a 20 minute walk, and Castro Pretorio Metro station (10 minute walk), from where one can get to the main sights (Vatican/St. Peter's and Colosseum/Roman Forum). Although we did not try it, the Spanish Steps are also within walking distance.
Susanna is a great host. She responded to our questions quickly and helped us resolve an issue we had with our North American cell phones. Also as a native Roman who manages/coordinates personal and group tours of Rome and beyond, she has a wealth of information and connections that can help with planning. We chose to take her private Vatican/St. Peter's tour (with Antonella), well worth the money when you consider the huge number of visitors, this allowed us to skip the line and get personalized commentary on the highlights of these places. She also advised a rough itinerary for us to follow in the 2 full days to maximize our use of time; Rome is an extremely busy city and can be confusing, so her help was critical to our enjoyment of the Eternal City.
Grazie Susanna, and arrivederci!