We booked Marco's apartment at the last minute from home and when we arrived he had responded and made sure that someone was available to let us in.
The apartment is very spacious and clean and had everything we needed for our stay in Rome.
The location was perfect - very close to a train station offering service to the airport and the main terminal. In a quiet area, but still very close to everything. We were able to walk everywhere from the apartment and there are lots of restaurants and services nearby.
I'd definitely recommend this apartment to anyone visiting Rome.