The apartment was beautiful, looked exactly like in the photos. Massimo was there to greet us on arrival and was very helpful. He even organised our taxi from the airport to the apartment (for an extra cost).
The apartment is a 10-15 minute walk from the metro so we found ourselves getting taxis back at night. As long as you plan for this it's not a problem.
The only criticism is the wifi wasn't great but if you're out all day it won't affect you.
Overall a really nice stay in Rome was had by all :)