Sanibel Harbour Marriott(R) Resort & Spa, boasting a sophisticated yet comfortable atmosphere, announces not only its 20th year as a AAA Four-Diamond awarded property by AAA, but this Sanibel beach resort is among the top four percent of AAA Diamond rated hotels in the country. As a recipient of the AAA Four-Diamond Award since 1992, Sanibel Harbour Marriott is the only Four-Diamond rated resort in Fort Myers, Florida.