We spent 4 nights at Paola's place and had great time! Its surrounding is quiet but still close to metro and bus station, so whole city is in reach. And Vatican is just around a corner! Apartment looks exactly as on photos. Plus kitchen is equiped, so we were able to prepare our breakfest everyday and even dinner when needed.
Comunication with Paula was with no troubles as she responses quickly. We met at apartment as we agreed and were wellcomed really nice!
I difinitively would recomend staying at Paola's place on your journey to Rome :)