Excelsior Gallia
The Katara Suite's main attraction is the private spa.
The Katara Suite, which has retained its title as the World's Leading Hotel Suite for a second year, is also the grandest when it comes to scale. At 11,000 square feet it is the largest hotel suite in Italy.
The WTA winners were chosen by a panel of experts in the travel industry, singling out the best resorts, destinations and airport lounges on the planet.
The sumptuous accommodation sleeps up to eight people, and is perfect for diplomats. It includes luxuries you might expect - such as a private terrace and opulent bedrooms - as well as some surprising bonuses, like bulletproof windows and a private spa.
Can't afford the £17,000-per-night room rate? Take a tour of the suite below.