Best: Hard to say if it has to be a Marriott one - probably the Residence Inn Treasure Island - perfect location, excellent rooms and fully up to my expectations. Overall best this year was the Sheraton Frankfurt Airport, great service, nice room, nice lounge.
Worst: No doubt the Marriott Suites Clearwater Beach on Sand Key. Should be torn down and rebuilt or rebranded to something below a Days Inn. Stay ended after 30 minutes and three futile attempts to find any room that did not pose any saftey- or health-hazard.
Greetings - Dirk