Carmen is a very welcoming host and has plenty of recommendations for your stay.
The flat is exactly as seen in the photos, and is very clean and in a fantastic location.
We were able to walk to the Colosseum in 30 mins, or the main Termini train/tube station in 10 minutes. There are also bus stops close by if you buy a pass.
We would highly recommend this accommodation as a good base for a family.