Marco's apartment is a perfect place for a visit to Rome. It's located on a 3rd floor with a small lift so getting your luggage up there is not a problem. It's very spacious and very clean with a very comfortable bed. It has a nicely equipped kitchen for those who want to prepare small meals. Location is great, too - 5 minutes from the Termini station where you can catch two metro lines and a lot of busses going to every corner of the city. There are plenty of restaurants around and a couple of grocery stores very close.
We haven't met Marco but our communication was great and his friend who checked us in was very nice so the whole process was easy and quick. I highly recommend this apartment.