The appartement is perfectly located, at the heart of a lively neighborhood and close to everything you want to enjoy in Rome : great restaurants, buzzing nightlife and cultural spots.
I highly recommend the place, Maria is a great host and accomodates you the best way she can. She is also of great advice when it comes to getting great spots (whether it be restaurants, or pubs, etc.) in the neighborhood. The whole flat is amazingly equipped, especially the kitchen; I highly suggest you get some fresh produce in the San Cosimato market just near and enjoy the kitchen equipment to cook something great.
The streets downstairs can be a bit noisy at night because of the buzzy nightlife, but this was not an issue at all for us.
Strongly recommend the place and will definitely go back there if I go back to Rome