Great apartment in an excellent location. We arrived late at night after a 22 hour flight and were greeted at the front door which was a bonus versus trying to find keys/apartment.
The location is excellent. Only a 5-10 walk to the Duomo and excellent cafes and shops on the street.
The place fits 4 comfortably, but can be a bit tight for space if you need to use the sofa bed.
Would definitely stay here again. The hosts were very responsive and helped me out heaps with all my requests.