Great location -- we could pretty easily walk anywhere we wanted to get to. It was about 25 minutes to the Pantheon; 45 to the Colosseum. Most importantly, it was across the street from the Vatican Museum and St Peter's basilica -- the places that generally have the worst lines, so it was great to be able to hop out of bed and be there in 5 minutes.
For such a central location, it was very quiet. Bed was *very* comfortable. AC available and worked wonderfully. The kitchen was stocked with all the items we needed (corkscrew, decent knives). Laundry in the room was a great help, as was the drying rack, iron, and board in the closet!
Luca was a wonderful host. One of his staffers was waiting for us at the front door, and was very kind (without being over-bearing) in getting us settled. He even arranged a private van to take us to the airport for the standard taxi fee, which was a huge help.
I'd highly recommend a stay here, and would happily return myself!