Because Giovanni was not in town at the moment I arrived, he sent a concierge to give me the key. Good solution. We didn't discuss about a leaving time because of our language barriere. The apartment was pretty good and had all the equipment me and my boyfriend needed.
Because my boyfriend had to go to the airport early and i wanted to go with him I decided i would go with him at 3 AM. Handing over the key at this time was a little bit of a problem and there was no opportunity to put the key in the mailbox or something.
All for all, the apartment was really good. The lack of communication in the last moment is the only bad thing.