My wife and I stayed there for three nights. The flat itself if well kept, with wonderful views to the piazza, with all the facilities you need when you return after a long day of walk. The location is superb: we purchased fresh vegetables, bread, amazing cheese (the owner will inform you about the shop, it is literally two minutes walk and open 7am- 8 pm) and fresh pasta (several good shops in the neighbourhood) and we cooked, making use of the fantastic kitchen. If you have kids with you, this is ideal. We just like cooking so we preferred this to dining out in the evenings. But there are also quite a few very attractive restaurants, and the owner will give you the tips about the local family run ones.
Bottom line: highly recommended.