The place is beautiful, tastefully decorated, and spacious. Location is perfect for both the città alta and the città bassa. The arrival was fantastic, and communication was fluid and useful all through our stay. The flat is completely new and refurbished, but the building is very old (in a good sense: the wooden ceilings are great). This makes it potentially cold, but the heating works perfectly and we felt warm all the time. The bathroom has no heating, though, but that's just a minor detail.
A fantastic place, I can only recommend it.