I highly recommend staying at Cristiano and Eleonora's Airbnb! For an Erasmus semester at La Sapienza University, I stayed with them, and first of all I received a very warm welcome that made me feel at home very quickly. Also after that it was a very pleasant stay, where they are both very easy to be around and always very willing to help whenever I had some issues regarding the Italian.
The room itself is spacious and very nicely decorated, it overlooks the garden. Furthermore, it is equipped with a closet, desk, chair and a spacious double bed.
The location of the Airbnb is also very convenient, if you walk down the road you are within 5 minutes at Tiburtina station, where many national express trains depart. When you walk up the road you are also within 5 minutes at the Bologna square, where there are a lot of nice restaurants/bars and also a metro stop, (which is on metro line B, reaching Termini in 5 mins, or the Colloseum in 10 mins) which is very convenient. There are also a lot of grocery stores a short walk away, which makes it easy to cook a dinner at the very cozy kitchen in the Airbnb.
Overall I would highly recommend this Airbnb, they are some truly amazing people, that made my experience as a student in Rome unforgettable from day 1.