We stayed in Paola's apartment for 4 nights in April. We are a family of 5. Although it was a bit snug for all 5 of us, it still was a great place to stay and I would recommend it to others. The location is fantastic - really close to St Peter's and within walking distance of lots of great sites. We walked to Trastevere for dinner a few nights but also ate in the restaurant opposite the apartment - which was nice.
Despite being so central and close to restaurants and bars - it is really nice and quite at night. So the best of both worlds.
We got the SIT Bus from the airport which stops a couple of roads away from the apartment, but the Metro stop is also close as well.
I would recommend to others! Thanks!