Though I'd love to provide a positive review, the apartment was broken into on our second day in Rome while we popped down the street for lunch. In our 30 minute absense, our belongings were all rifled through and tossed around. The door was secured when we left and there was no sign of tampered doors or locks. We had a small amount of cash, a makeup bag, and sunglasses stolen, as well as a spare key to the apartment. Fortunately we had our passports with us and otherwise don't travel with things of much value. Needless to say we canceled our remaining days of our stay and found a hotel nearby.
Otherwise, the apartment itself is lovely and as described. It is an ideal location and felt safe until the break-in. Valentina's brother Lorenzo met us upon arrival to give us keys and show us around.
We have now noticed a previous traveler in August 2015 also experienced a burglary. Please exercise caution.