His plans include defunding Rome's bloated film festival, and tearing down a really ugly museum, because he feels that Rome isn't the place for modern architecture. He's probably right, too. Here is a picture of the Vatican. Here is a picture of the museum.
But the real reason a "right-wing" politician has been elected mayor of a largely left-wing country, that once almost voted itself Communist, is that he's offered to crack down on crime and immigration. American politicians take note.