It also depends if you are comfortable driving in the English manner. It sometimes takes a bit of getting used to driving on the "wrong" side of the road.

Taxi's are plentiful, but make sure you pre-arrange your return before getting out at your destination. Other than the cruise port, downtown Basseterre, and the Marriott, taxis do not sit around waiting for fares.

Here is a bulletin board for the island My Island You can expect to get lots of information there.