SiSpa at The Palm Beach Marriott Singer Island Beach Resort & Spa Awarded Top 100 U.S. Resort Spas by Conde Nast Traveler SINGER ISLAND, FL--(Marketwired - Mar 13, 2014) - SiSpa at The Palm Beach Marriott Singer Island Beach Resort & Spa ("Palm Beach Marriott") was awarded Top 100 Resort Spas in the United States...