It's not exactly at South Beach but near, and it's not one I would recommend.

Miami's most renowned landmark hotel, the Fontainebleau Hilton Resort, is situated in the midst of 20 lush tropical acres. Comprised of three buildings, this 1,206-room resort, including sixty lavish suites, has something to offer both the business or leisure traveler.

When Miami Beach saw the opening of the Fontainebleau's door, overnight it became the island's premier resort, the "Crown Jewel of Miami Beach". It was the top resort hotel in the most popular and famous resort area of the country. http://www.hilton.com/hotels/MIAFHHH/index.html