Possible Clues:

• Boardwalk buy
• Arthur Hailey novel
• Marriott, e.g.
• Hyatt, e.g.
• Boardwalk rent increaser
• House rented, turned into temporary accommodation
• Best thing to put on Mediterranean Avenue
• House for travellers
• Paradiso, in a Gina Lollobrigida film
• It may have key cards