The place is a cute attic-apartment in a very nice area of town. The host was very friendly, and the person in charge of checking me in had very good suggestions about what to do in Milan.
There are a couple of aspects I was critical of, which in my opinion downgrade the review from 5 stars to 4 starts. First, I found it a bit odd that they require to take pictures of your personal ID for the check-in, and require you to sign a rental contract. This was a first for me when it comes to Airbnb.
Second, and more critically, something I found a bit petty: they check how much electrical power you use throughout your stay and charge you separately for it. I think I know why they do this: the apartment is pretty bad isolated but has an AC. I find that this is pushing the weight of bad design choices on the client: for example, the bedroom has its own AC unit but the door in the room does not even have a door hinge. The cold air, as expected, leaves the room pretty easily and this makes the AC very inefficient energy-wise. While I was using the AC, I kept the door closed using a shoe -- it's wild to have to come up with MacGyver solutions like this when you're paying this much for an attic apartment. And even with this hack, the door didn't fully close so -- no surprises here -- the AC anyhow operated very inefficiently.
My feedback is that the landlord should actually fix the isolation problems in the apartment before going out to charge clients for their obvious consequences.
Now, I want to put this in context -- the apartment is indeed very cute, and I am happy in every other way about my stay there. I put this much emphasis on this point not because I am not happy, but because I think it is an important aspect to fix.