My girlfriend and I had a lovely week long stay in Barbara's apartment in early July 2017.
The apartment is just as in the photos - it's spacious for 2 people, clean, well lit with natural light and generally a lovely place to stay.
It's well linked to the centre of Rome & all the main sights (Colosseum, Forum, Trevi Fountain, Spanish Steps, Vatican City - just to name a few) via Quattro Venti train station, which is just a few minutes walk from the flat. From Quattro Venti, you can get the train to Roma Ostiense, which is linked to Piramide Metro station - the Colosseum is on this Metro line.
We highly recommend going to Santa Marinella for a day at the beach too, it's only a half hour train journey from Barbara's via San Pietro (there is a section of free beach right at the end of the stretch!).
The area was really pleasant, there were local restaurants, cafes, and supermarkets nearby.
Barbara's apartment was well equipped, clean, and thankfully had air con - this was an absolute must in the mid-July heat!
Barbara and her husband Antonio were always a phone call away if we had any issues or questions, and were super helpful.
We did have a few issues with the power - if we used multiple electronic household appliances at the same time, the fuse would blow and we would need to reset it - though we have brought this up to Barbara so no doubt she will be quick to sort this issue.
Overall, we had a great stay and would 100% recommend Barbara's apartment.