The location of the apartment was fantastic! You're a block away from Campo de' Fiori, and three blocks away from Piazza Navona. We walked everywhere - to the Colosseum and as far as Testaccio. There are plenty of really restaurants, gelaterias, and bakeries nearby. It can be noisy at night because of the location, but it didn't keep us awake. While we didn't use the roof top deck, you have access to the deck, which would be very nice in the summer.
The living room was the spacious and allowed us to spread out. One of the bedrooms is smaller than the other, but has a slightly bigger bathroom. There are windows throughout the apartment, which allow natural light in, except the larger bedroom - the window is in the corner of the room.
Check-in was easy - Lorenzo's brother met us and helped us with the luggage. It was a 10 euro taxi ride from Termini. There are plenty of taxis driving through the neighborhood, if you need one for the airport.
I would stay at this apartment again.