It’s the culmination of the three ships, where little tweaks – like a spectacular grand staircase that sits under a glittering ribbon chandelier – make a big impact. Without a doubt, Seven Seas Grandeur is beautiful. Hallmarks of this class of 746-passenger ships include expansive spas, multiple dining options and one of the most expensive cruise suites you will see, the Regent Suite, which comes with a price tag of $11,000 per night for two people. Seven Seas Grandeur is the third in the cruise line’s Explorer Class of ships, which the company has called the most luxurious class of ships at sea. EST) – Regent Seven Seas Cruises launched its newest ship this week in Miami, unveiling the latest “most-luxurious ship in the world” to journalists (including Cruise Critic), cruise line executives and travel agents in a preview sailing.