The location of Monica and Alessandra's unit is amazing. Many popular destinations are within walking distance and for those that need a metro ride, the metro ride is just a few steps away.
Monica and Alessandra were also gracious hosts. They met us when we arrived and gave us a very useful personal map outlining places to go to and good places to eat in. They also arranged an airport pick up for us which is perfect when you're new to a place.
I would recommend this unit for Rome wholeheartedly.