Location is fantastic. We spent four days (five nights) in the property and never had to use public transport at all (except to and from the airport). The is very well located to allow walking to Colosseum / Roman Forum, Vatican City and all the other central Rome sites.
Also, despite being centrally located, it was unexpected extremely quiet with neither any road/traffic noise nor any neighbours being heard. The road it's situated on is very quiet.
Communication with host was great. And she very helpfully arrange airport taxis for us.
Flat was also very clean, good shower, and exactly as described.
Would happily stay again.
(A couple with two children (aged 11 and 8)).