From San Miguel de Cozumel, follow Caratera Parimetral Sur or Caratera Costera Sur towards Zona Hotelera Sur. At a point when these two roads re-connect (approx. 10 mi/16 km), look on the right for the clearly marked entrance to Residencias Reef. Geolocation: 20.403481 -87.015159
https://www.youtube.com/watch?v=Sgscub792FY