Sun, 12/24/2023 - 06:48 Tech Insider Travel Travel I spent three nights in the Seven Seas Grandeur's concierge suite and now understand why travelers are willing to shell out almost $5,500 for one week in this floating hotel room.Brittany Chang/Business Insider Tags Travel, Transportation, Cruise, Travel, Transportation, business-visual-features, regent-seven-seas-cruises, seven-seas-grandeur, luxury-cruise, luxury-travel, norwegian-cruise-line-holdings, business-holiday-save-2023 Source I stayed in a $780-per-night cruise stateroom on a new ultra-luxury ship. I now…