http://www.frommers.com/images/destinations/maps/jpg/176_resortareaaccomodations.jpg
If the addresses run like they do in the states. Then the single digit street addresses would be near the beginning of the road. So low numbers will be near the Marriott.
I found other addressses for the island on the same road. Like a Grocery Store that has the street # in the 1000's. You won't find a Grocery Store near a heavy hotel strip, so the grocery store would be passed all the hotels and "south" on the map.
L.G. Smith Blvd. 82 (closer to the Holiday Inn)
L.G. Smith Blvd. 376 (would be closer to the Boat Pier)
Thanks to both of you for the additional info...