Marriott Singer Island Beach Resort Hi Floor Stunning View. The other listing is #627229.4 Diamond Hotel at the Palm Beach Singer Island Resort Marriott. Aloft Star," said mentor and singer/songwriter, Gavin DeGraw. "It’s great see artists who’ve honed their craft through live performance succeed. Really enjoyed my time with them today. Thanks to Aloft. Aug 3, 2015. Singer Island may be Palm Beach County's best-kept secret – or, Aerial view…