Stefano was easy to communicate with and timely in his responses. The description of the unit was accurate and the pictures representative. We liked the location. It was surprising how close we were to the Pantheon. The archeological site directly in front of the building is really cool. Plenty of restaurants and shops close by. We didn't use mass transit - for our purposes, walking was just fine. The unit is behind the secure door on the street. The unit is on floor #4 but that is good news. The elevator is really fun (and works perfectly). Stefano oriented us to the unit, explaining the combination washer/dryer. The two bathrooms are excellent. The single bedroom is in a loft space. The fold out couch was useful when we had guests the last evening (which Stefano graciously approved). My wife and I had everything we needed. There are USB ports everywhere (a nice touch). The lock system on the door is very solid. The area (in fact all of the old part of Rome that we visited) seemed very safe to us. We walked a fair amount after dark with zero concern.
Stefano arranged for a driver from the airport. While waiting for our bags at the airport, both Stefano and driver called me on WhatsApp. They made the airport to driver experience very easy. The driver communicated with Stefano to hand us off to Stefano as he waited at the front door of the building. I always appreciate it when we can get into the apartment seamlessly.
As you can tell, if Stefano's apartment meets your needs, you will be pleased.