Our stay was everything we were looking for on our first leg of a tour of Italy. The apartment is well laid out and everything is very comfortable. The location could seriously not be any better for seeing the sites around the city. It is a main walking road during the day, but stays quiet in the evening and the morning.
The only note to consider would be there is no elevator, the unit is on the 4th floor and the stairs are narrow and steep. Leave the large luggage at home if you can!
My wife and I absolutely enjoyed our stay and next time we are in Rome, we will definitely be back.