Catharine is truly a Superhost. Our experience at her place was as good as it gets. Catharine was so flexible, kind, and thoughtful in making our visit to Rome the best it could be. The apartment was perfectly cozy and delightful for my fiancé and I with an exquisite view of the dome of St. Peter's Basilica from the balcony. It was the perfect place to drink a morning espresso and the graciously provided breakfast.
The S. Pietro train station is a 3-minute walk away, which provides buses into the city, and trains to Termini and the airport (FCO). It's such a convenient location for walking as well. The neighborhood is quiet, which was lovely to come back to after a day in the busy, crowded city. Catharine provides such a comprehensive binder of how to use public transport and where the best places to eat and drink are in various neighborhoods.
If you're not staying here on your visit, I just cannot understand why not.