Definitely choose this place! The atmosphere of the neighborhood and the square, which your living room window overlooks, is so lively and wonderful, you will not be disappointed. Everything you could ask for is in this neighborhood, two little grocery stores, a variety of restaurants, cafes, etc, but you can easily get to the downtown area. My wife and I walked to almost all the tourist sights from the apartment, no problem. The walking route to the Pantheon, for example, goes along the beautiful Tiber river. The Vatican is a little bit further, a bus may be preferable to walking, but even then, it's doable. There is a stop extremely close (1-2 min walk).
Giuliana is friendly and responds to messages promptly, the place was clean, all amenities advertised were provided. There's a kitchen which we stocked with breakfast supplies purchased from one of two very close little grocery stores. But to reiterate, the best part, in our opinion, was the neighborhood square, a bustling center of activity for friends, couples, and kids. You can even order drinks from the bar along the square and take them out to one of the many benches running along the perimeter.