As bragging rights go, one of the world's largest suites at sea comes in at a cool $10,000 or so a night aboard the Regent Seven Seas Explorer.
From Regent Seven Seas Cruises
For your money, you get an enormous 4,400 square feet of space, including a custom Steinway grand piano and an in-suite spa with full sauna.
Stephen Beaudet/Regent Seven Seas Cruises
The 1,345 square-foot Crystal Penthouse aboard Crystal Serenity comprises a living room, den, dining area with ocean view, two bedrooms and, naturally, a butler's pantry.
Ian Schemper/Crystal Cruises
The master bathroom features a heated marble bench in the glass shower, lest your buns get chilly, while you can also admire the ocean view from your Duravit flotation tub.
Ian Schemper/Crystal Cruises
A completely different nautical experience comes aboard the 12-person MY The Wellesley superyacht that sleeps twelve in stylish Art Deco interiors.
Martino Motti Superyacht & Yacht
The lower deck Master Suite features leather paneling, mahogany and bronze details, not to mention the mandatory walk-in closet.
Martino Motti Superyacht & Yacht
Seabourn's latest ship, the Seabourn Encore, launched in 2017 and its Wintergarden Suite is the most luxurious and largest.
From Seabourn Cruise LIne
Wintergarden Suite guests can kick back in 1,550 square feet of indoor and outdoor space including two bedrooms, two private verandas and a dining room seating six.
From Seabourn Cruise LIne
Amongst the 1,250 guests on board the Oceania Riviera, Owner's Suite occupants win the biggest suite prize hands-down thanks to more than 2,000 square feet of space.
From Oceania Cruises
The suite includes a living room, dining room and master bedroom while there's even a self-playing piano, so you can pick a tune to be serenaded by.
From Oceania Cruises
At 575 square feet, Windstar Owner's Suites provide sweeping ocean views as well as a separate living room and dining area.
Roger Paperno/Windstar Cruises
Perfect for families or groups of friends, the duplex Garden Penthouse aboard the Genting Dream sleeps up to six people in 2,400 square feet of luxury.
Ingrid Fiebak-Kremer/Dream Cruises
Alila Purnama is a traditional Indonesian wooden two-masted boat bathed in luxury.
From Alila Purnama
The Sriwijaya Master Suite aboard Alila Purnama features wraparound windows giving 180-degree views of the incredible island landscapes.
From Alila Purnama
A floating windjammer palace built in 1931, the Sea Cloud features two Owner's Cabins. One features masculine wood paneling.
Dirk Weyer/Sea Cloud Cruises
The Sea Cloud's second Owner's Cabin is on the opposite end of the spectrum, with a decidedly luxurious feminine appeal.
From Sea Cloud Cruises
The M/Y Grace yacht was named after the iconic Princess Grace of Monaco, as was the new Grace Kelly Suite designed by Adriana Hoyos.
From Quasar Expeditions
While it's not a suite at sea, the 401 square-foot Royal Suite on Uniworld's S.S. Catherine offers special views of the Seine and Rhone rivers from its open-air balcony and living room.
Pam McLean/Uniworld
The classic Dutch schooner Adelaar is a sailing yacht for true connoisseurs. It was built way back in 1902 before being completely refitted in 2011.