Truly a highlight of all of our stays in Italy! The apartment was even more spacious than the pictures made it seem. It was clean and well-appointed, and check-in/out and communication were very easy.
The location is great for the Duomo and other sights, wifi was good, and AC took the edge off a record heatwave.
As others have noted, there is a decent amount of steep stairs to climb. It's not terrible but FYI for those with heavy luggage or who may need an elevator.
Otherwise, a superb spot!