Chiara is super fast at communicating and very helpful with anything you need. Her apartment is perfectly located near public transportation for getting to all of the sites in Rome, and coffee shops & restaurants.
Bar Baffo Caffe was one of our favorite, as well as Il Maritozzaro. Both are only a 5 min walk and each had really good coffee and pastries to start your day.
I would recommend only using public transportation. Nothing against Chiara's place, I think anywhere in Rome would be extremely difficult with a rental car.
Even though you share the common areas with two other apartments, the space is very quiet with your own bathroom/shower and the bed & air conditioning create a space for perfect sleep after exploring Rome.