Blame It on the Bellboy
There are three men who travel to Venice: Mike Lawton, Melvin Orton, and Maurice Horton. One of them is a hired gun who was hired to kill a mobster. Another is a lech who has been fixed up with a woman he has never met and is hoping for some action. A third was sent by his employer to evaluate a property his boss is interested in purchasing. In the same hotel, all three of them are staying. Unless, of course, the bellboy manages to get their names mixed up and accidentally provides them with information that is intended for someone else. This leads to a Realtor that is willing to go above and beyond for the sale. Then there's the case of a man stalking a woman on the lookout for love. As for the mobster's house, another goes there believing they've been sent to kill him.