We've spent 5 days in Stefano's apartment. This place is really comfortable and has all amenities that you may need during your stay. Localisation is just 15min walk from touristic attractions and you you don't feel like walking a metro station is just a few blocks away. In Testaccio district you can find a lot of shops, caffes and bars. There is also a small market just a few steps away.
Stefano is a very firendly, hospitable and caring person that really takes care of his guests. We definitely recommend this apartment.