We did not meet Arianna; we met Stephanie, who was very kind to wait for our late-evening arrival, and patiently answer all questions to help out us travel-weary guests.
The apartment was very lovely. It is on a somewhat busy road, but that did not bother us at all.
It is very convenient (walking distance) to the Tiburnia train station, which made our departure from Rome very easy.
The walk to the metro was also not terribly far, which made getting in and out of central Rome (just a few stops) quite convenient, so that we could easily take respite from the summer heat before heading out to dinner.
There were drinks left in the fridge for us, as well as bread and other continental breakfast items, which we have come to discover is NOT the norm for airbnbs in Italy.
We had plenty of room for the 7 of us, (the three bathrooms/showers proved most useful!) and the patio was quite lovely and usually shaded (important in summer).
Thank you Arianna/Stephanie for a wonderful first airbnb experience!