Unfortunately, there aren’t a lot of positive things to say.
The location is perfect if you’re planning to visit other cities besides from Milan, since it is 2 minutes away from the Central Station, where you can take the trains/buses to anywhere. Also, from the Central Station you only have to take one metro (5 minutes) to get to the Duomo.
Nevertheless, the building is located in a busy area, which meant a lot of noise on the street (cars, ambulances, police) during the night and early morning. So, if you wanted to sleep in, that wasn’t an option.
The second thing that really upset me was that they said they would provide salt, pepper, and oil, but this wasn’t true. Moreover, since the Airbnb had a kitchen, I believe it is only reasonable to expect that there would be a sponge and soap to do the dishes. There was soap, but no sponge. I texted the host on Saturday asking for a sponge (and also, a corkscrew, because we bought a bottle of wine) and she never responded. Not even after we checked out, apologising for the inconvenience - this was utterly rude. We had to spend 3 days with dirty dishes on the sink. I guess you can imagine the smell….
We also had a problem with the air conditioning which, on the first night, did not work properly, but I talked to the host and she fixed it (the only time she proved to be available).
All in all, this is a great location and the studio is very comfortable. I am sorry that the host did not try to make sure our stay went smoothly and that is the reason I cannot give a good review.