At my arrival I was given the key not by the host, but by someone else. This was not my first time in this airbnb, as I often go to Milano for working reasons.
The person who gave me the key was very rude, he said multiple types that I could not bring any other person inside the airbnb, and that they had video of me taking other people inside the airbnb the previous times I had stayed there. I told him he was mistaken me with someone else as I was sure I did not take anyone in the airbnb. I also invited him the rewatch the video but he started laughing saying I was lying and that they had proof of me bring other guests in the airbnb. The guy was very rude, unpolied and arrogant.
What this guy said is actually not true, I have never brought anyone in that specific airbnb. I brought a friend over one time in a near by airbnb, but not in that one.
If you are staying at this airbnb keep in mind that, as the guy said, they will record you (they said they had video of me which I have never seen). Make sure you don't bring anyone, not even for 5 minutes as they will accuse you of bring other guest in and treat you like S***.