Overwater bungalows and water villas are known for being expensive, but at least they are also known for being larger than a typical hotel room, especially when you include the private decks. There are over 110 resorts in the world offering these over-the-water rooms, and almost all of them are over 500 square feet, and usually around 1,000 square feet. This makes those about 2 to 3 times larger than a typical city hotel room.
At the Gili Lankanfushi Maldives, (formerly known as Soneva Gili by Six Senses) they have 44 Villa Suites and Residences that range from 2,260 to 2,691 square feet, making them among the largest in the Maldives. But one – known as the Private Reserve – measures in at an astounding 15,069 square feet (1400 m²)!!! It's arguably the finest overwater resort in the Maldives, and the Private Reserve is BY FAR the largest overwater villa in the world.