According to the listing, the 2,000-square-foot Tudor home was built by Fred Trump himself, and has 5 bedrooms, 3.5 baths, 15 beds, cable TV and “a giant cut out of Donald in the living room” who makes “a great companion for watching Fox News late into the night.” Whether or not that sentence was written sarcastically is hard to discern.
As for what occasion calls for renting this place, well, that's up to you. Maybe you invite a bunch of friends out there for the weekend. Or use it to house your favorite Russian diplomat. Hell, throw a party to belatedly celebrate Obama's 56th birthday for all we care. Just try not to bring any "guests" that might land you in an MI-6 dossier.