We had mixed feelings about this place:

Upsides:
-Beautiful terrace-- a nice place to relax after a day of sightseeing
-Generally quiet neighborhood
-Pictures were an accurate representation of the space
-Near a grocery store
-Big space-- nice sitting room, kitchen, and fairly large bedroom as well
-Decent water pressure
-Generally clean with amenities taken care of (soap, TP, dishes etc)

Downsides:
-It has an ant problem. There were ants all over the place and they seemed to bite
-The air conditioner works fine but makes a terrible buzzing/clanking sound after it has been on for about 20 minutes and continues to make the noise for some time after you turn it off
-The listing says there is a washer/dryer in the apartment but unfortunately there is not one
-We were charged an additional fee upon entering the apartment which may have been legitimate but nonetheless was not disclosed in the listing so was a bit confusing
-Be warned, while the neighborhood is close to the Coloseum, it is about an hour walk from other major destinations (and over an hour to the Vatican). I'm sure public transportation may have made this easier but for those who like to walk, take the distance into account