We had a fantastic stay at Simona's apartment. The location is great, a very easy walk to the Vatican and from there to the river and all the sites in the centre of Rome. (There is also a bus stop next to the apartment which is handy, and the metro is pretty close too).
Simona was a great host - she had put together a great guide to the city and supplied us with maps that were super handy for getting about. She also booked us a private car for our journey to the airport on our way home - really convenient, and great service too. Communication with Simona was great, and she was happy to help with any questions we had. She also let us drop our bags off a little early (while the apartment was being cleaned) before our check-in which was fantastic.
The apartment was really modern, clean, and tidy, and had everything you'd need (fully functioning kitchen, towels and soaps, and hairdryer too). The seating area outside on the terrace is wonderful, and gets lots of the afternoon sun - perfect for a relax after a busy day site seeing.
I'd definitely stay again, and would highly recommend it to others!