The apartment is quite large, the bedrooms and the living room are very spacy. More than enough space for a family of 4. Having 2 bathrooms was very convenient!
The building is right next the main road so it may get a little noisy at night but it's nothing that bothered us. The building has a private entrence and is quiet.
The location is very good. Across from the building there's a large supermarket, cafe, pizza place, and most importantly easy access to Metro. It's only 15-20m by metro to the main train station in Rome.
It's about 25m from the airport by a taxi. The taxi price was around 50€.
The owner was very friendly and helpful. Highly recommended!