are there any places that you could rent a car in treasure beach?
There are unofficial car rentals and there are official car rental places in Junction and Black River.
Islandcruisers (see www.islandcruiserjamaica.com
tho the site MAY be down so google island cruiser jamaica) for runabouts rentable online and pick-up-able at M&D Grocery in TB. Waterloo Guest House rents regular cars at good rate in Black River.
p-can, I can give you one in the area if u like, e-mail me