The apartment is very lovely, with a very cute design and a perfect perfect location. It's location is truly best if you are in Rome for tourism - in the center of utterly everything, most strategically located for reaching every place you want to see while there. And it has everything you might wish. When I read the description I thought it would be very small, but it is perfect - with a sofa in addition to the double bed, enough dining space, a very nice and spacious bathroom, three independent windows that make it very bright.
Jack, the owner, was not there, but he was readily available through email and we had no problem with checking in or anything. A neighbor, Fabio checked us in and he arranged check-in time at our best convenience (which was not easy for him, as I understood).
The only downside is that there is no internet connection. But there are several very nice guide books for Rome in the apartment, so you can look up things while there.