The apartment's location is excellent and convenient, as it is right across from the Duomo in Milan. It cannot be more centric while still being good regarding noise level. It is also well connected through the metro of Milan, and overall the value for money is very good. A few minor things need to be fixed, e.g., the toilet brush was broken, the toilet lid was moving in all directions, and there was one standing lamp in the room whose lampshade was cracked and falling all the time on the floor. However, the worst part of the stay was the host's support and reaction time to problems in the apartment. In particular, the automatic lock pad of the apartment (it does not have a key to use but a code that is set remotely to open the door, and a button to lock it) was not working after the first time we entered the apartment at check-in. So, after arriving in Milan in the evening, we could not lock the door of the apartment to go for dinner, etc.
After we wrote to the host (Enrico) as soon as we noticed the problem that night, he first argued that he did not see the messages that evening, so we had to leave the door open to go for dinner after waiting for one hour. Then, it took almost a full day to have someone come to check why it was not working. Enrico argued that the company managing the lock said all was ok based on the on-line information of the system, but it was not working and nobody was coming to check on site. Essentially, he did not trust what we were saying (although I offered to send him a video to show it) and we had no phone to call him or discuss (he never provided one), only a support number of the company of the lock that never replied to our messages.
Overall, after almost 24 hours of leaving the door unlocked (and wasting a lot of our time in Milan that day inside the apartment for an answer), we decided to leave the apartment open and carry all our belongings of value all around Milan. So, we had to carry a backpack of more than 15 kgs all day long. We had to call AirBnB Support to make a complaint and have this matter solved, and they agreed that the host had violated the expected service. Finally, the matter was solved, but this experience made our weekend in Milan finish with a bitter feeling.