The apartment is just as the pictures show it. Perfect for 2 or 3 people, but it will definitely be crowded with any more, especially with luggage involved. My wife and I had a great stay here as you can see the Colosseum right from your door.
We had everything we needed and Frederico was easy to reach when we had any questions.
Other tenants may have complained about the noise, but just understand that you're in a city and you'll be fine. The shower did, however, lose hot water after one person uses it so you'll have to time your showers.
Other than that, we had a great stay!