The apartment is perfect.
Two metro stations close by, grocery store at 200 yards, great bread store just around the corner, Eataly less then 1 mile away.
It is located in a very family oriented neighborhood, free parking all around (I do recommend to park and use the metro and bus for everything).
We did not have a chance to personally interact with our hosts too much, but over email, communication was easy and response was fast.
All in all a great experience and if we ever come back to Rome, that is where we are staying.
We saw a guy to steal a purse from a woman, so be careful with your values on the metro, touristic areas and buses.