The appartement is really nice, very well decorated, with a lot of taste. The area is great with plenty of shops and restaurants, the Duomo is just a 30 min walk. The internet is very reliable and super fast. (300Mbps) making it very easy to work. I can think of 2 areas of improvements.
1-The appartement is obviously in an old building, but maybe the electricity should be re-done. There was not many power outlets to connect laptops, phones, etc. Also a number of them where not working (in the living room). To make the place really ideal for a business traveler I would consider upgrading the electrical system in the appartement.
2-Hot water. Maybe I took a longer than usual shower, but on the 2nd morning I felt the water was getting lukewarm at the end of the shower, and I didn’t any hot water after the shower to shave. The next evening it was all good. I guess the water heater isn’t that big, maybe a bigger concern if hosting 2, 3 or 4 guests.
Other that that it was a really nice stay in a very authentic appartement.