I stayed at Mario's place during a Congress at la Sapienza. It was very convenient since it is at walking distance from Termini station and from the university. The street is quiet and in the surroundings there are good options to eat delicious pizza at a very affordable price.
The apartment was very clean and comfortable and the pick up of the keys was super easy. Mario is an excellent kind host who gave me very good advice for restaurants and mobility in Rome.
I totally recommend this place for either work or a leisure trip.