Directions to Sanibel Harbour Resort From I-75: Take exit 21 (Daniels Parkway) and go west. Follow the signs to Sanibel Island. After about five miles you'll turn onto Summerlin. Stay on Summerlin for about eight miles. After crossing Shell Pt Blvd, go about 1 1/2 miles and exit to the right at the Sanibel Harbour Resort sign. The resort exit is within sight of the Sanibel Island toll bridge. DO NOT ENTER THE TOLL BRIDGE - THE RESORT IS ON THE MAINLAND, NOT SANIBEL ISLAND. Enter the resort grounds and bear right at 0.1 mile, then turn left 0.2 miles further on to the hotel and guest registration.