If there is no readily available email, I would call the property directly and ask for the individual email of the person responsible for the issue on which you wish to consult. Or better yet, speak with that person and then, if necessary confirm or follow up via email.

General email boxes, as others note, are often not considered sufficient for anything beyond email overflow.

What exactly do you want? Given that it is Rome, there may well be someone here on FT who can help you with a good contact person.