We had little interaction with Guglielmo during our stay, which was fine because we had no major issues. The apartment was great, a little smaller than anticipated, but clean and everything seemed new and fresh. Our only issue, is all four of us got chewed up by mosquitoes while we slept. We couldn't figure out how they were getting in, and we were careful to close windows before nightfall. However, there are no screens on the windows (maybe this is common in Italy?)
The neighborhood is great, it's on a street that is mostly closed to cars, so the neighborhood restaurants all have outdoor seating in the streets, very charming. This was a great feature for our three year old son. There are not many places in Rome to let small children run without fearing they'll be hit by a car, or lost, so every night we would take our son for a run down our street. He loved it, and it was a nice way to end our day.