These apartments are one of the best apartments that we (my husband and me) ever had booked. We felt like to stay on there to live. I can mention the following advantages:
1) Location. The apartment is located close to metro station. But it was not almost be necessary to use metro. We was going on foot all the time. The Centre is within walking distance. Apartments are not in the midst of Rome with crowds of tourists yet, but they are on the border of the Centre. The windows look on a quiet street.
2) Interior. Very nice lift and stairs. The apartments are furnished in style. Beautiful paintings on the walls, books, interesting interior. There are everything you need for a comfortable stay. Very clean. These apartments are much more comfortable than hotel room.
3) Alessandro. Exclusively hospitable and good-natured. He met us at 2am because we had the night flight. He left for us a bottle of red wine and some food in the apartments, so we could have supper and breakfast. It was very handy. Once we locked the door, leaving the keys in the flat. We had to disturb Alessandro almost night, so he gave us another key pair. We were awkward, but Alessandro did not express discontent in any way.
There were a wonderful Christmas vacations in Rome (7 days). And I think that the place of living played an important role. These apartments are highly recommended.