Lovely little apartment with a wonderful garden in the back. Great location - in the middle of the lively Navigli area, but still secluded and quiet during the night. Communication with the host, Paolo, was great and without issues. When we had a question or request, he was soon to oblige.
Unfortunately, on day 4 of our stay, the next door neighbour began really heavy construction work on the unfinished house/apartment next door which literally made our room shake. Since my wife and I are in Milano on a "working holiday" (meaning we're spending a lot of time indoors getting work done on our laptops), we decided to ask if Paolo would accept us cancelling the rest of our stay. Paolo agreed to refund us for the remaining nights without argument, which I think was very graceful of him and the gesture was very much appreciated. AirBnB does not have any firm rules for cases like these and Paolo was under no obligation to refund us more than 50% for the remaining nights, so he was certainly generous. I want to strongly recommend Paolo as a host.
That said, the restart of the construction may have been outside of Paolo's control, but the next door house is very obviously quite far from being completed and it seems like the work will proceed over at the very least the next couple of months, even if there might be longer breaks when no work is being done and even if the noise might not always be quite as loud as it was during the last days of our stay. I think, though, it might be beneficial for Paolo if he could make the effort to find out the particulars of the construction schedule and perhaps offer a small discount and a warning for those days when there is construction ongoing, as I'm sure there are many people who will spend most of the day outside of the apartment anyway, while others (like us) who intend to spend a lot of time indoors during the day will know this listing might not be ideal for them.
While the apartment overall was lovely I would say it's perhaps better suited for shorter than longer stays. The kitchen was perhaps a little understocked in utilities and the fridge is rather small. Another thing that bothered me a little (but not my wife) was the smell coming from the bathroom (sewage?), which did also seep into the rest of the apartment a little. It might have been a temporary thing as no other review seems to have mentioned it and again, my wife wasn't bothered, but I thought it might be worth mentioning nonetheless.