Stayed here by myself for a few days in November and it was perfect. Location is great - right next to Piazza Maggiore. It can be a little loud at night on weekends but the windows/shutters are fairly thick and the noise wasn't enough to bother me. Everything was clean and cozy. Luca met me to let me into the flat when I arrived very late (11:30PM) and let me store my bags in the basement on my last day. He was super nice and responsive! Some people complained about the key breaking or the stairs being too much - I didn't find any of this a problem. I live in London normally and have to walk up a few flights of stairs all the time, so if you are a city dweller then you are going to be fine. Bottles of water in the fridge were a very nice touch!