This is a great place to stay. The apartment is extremely clean and nicely appointed. There can be occasional noise from neighboring apartments but this one negative pales in comparison to all the positives.
Marina is an exceptionally responsive and kind host. The neighborhood is full of shops to buy everything you could ever want to cook and eat.
The metro and the Ostiense train station are conveniently located.
A great place convenient to popular tourist spots that is not touristy. (Although I highly recommend you walk around and check out some of the graffiti art.)