Federica is a very good host, punctual and precise in communications and very helpful.
She was waiting outside at the agreed time, the check-in was fast and she provided all the necessary information regarding the flat; she also had a very kind thought to provide some pasta, a bottle of tomato sauce and a bottle of wine for the dinner, plus also some stuff for breakfast like coffee, rusks and jam.
The flat is exactly as it is described and it has all you may need for a comfortable stay.
It is located in a perfect spot, in a very quiet building less than 100m from Viale Trastevere, where you can find supermarkets, bars, restaurant, shops. There you can also take tram number 3 or 8 that can take you in 10/15 minutes to the very city centre (Piazza Venezia, Circo Massimo, Colosseo, etc.) or to the Trastevere Train station in just 5 minutes where you can catch the train to Fiumicino Airport (less than 30min ride).
I would definitely recommend Federica's place if you plan to visit Rome both for leisure and for business.