I spent just 2 nights at Nadia's apartment with a friend and we enjoyed our stay.
Nadia is a very kind host, she gave us very detailed instructions for the check-in and also very useful suggestions for our stay in Rome.
The location of the apartment is very good, close to the metro and Termini train station.
You can also reach Colosseo with a 15 minutes walk.
The bed and pillows are very comfortable and the apartment is equipped with all you can need during the stay.
I can recommend this apartment.