Mar Azul Key Biscayne Real Estate Mar Azul – Key Biscayne, FL Address: 600 Grapetree Drive Key Biscayne, FL 33149 Active 600 Grapetree Dr #8CS, Key Biscayne, FL 33149 - $2,650,000 Located in Key BiscayneBuilt in 1974MLS #: A11764812 3 Bedrooms3 Full baths 2,813 SqFt More details This information is believed to be accurate, but without any warranty. Mar Azul Key Biscayne