This apartment was perfect! The bedrooms are very comfortable, the kitchen/living area setup was great, and the location is ideal.
We wanted somewhere that would be a good base for seven-eight days in Rome, and Flavia's apartment was excellent. There are a ton of great restaurants within five minutes of the apartment, and several grocery shops in the same block. It's also easy walking up to the Vatican or over to the historical center -- about 15-20 minutes in either direction. We caught taxis a couple times at the end of the day (as someone else recommended, download the MyTaxi app: really useful!) but walked for most of the trip.
Little details that I look for in reviews: shower is great (large, plenty of hot water!); kitchen is well-supplied with dishes, pots, pans, utensils; there's even a washing machine!
Communication and check-in were great. Would recommend without hesitation!