As on all Caribbean islands the tradewinds blow from east to west, at a steady pace of 15-25 knots (except with a hurricane!). The eastern sides are the windiest, but less attractive because of all the deposit on the beaches. That's why most tourist places are on the western sides, such as Rodney Bay and Soufriere. Of the two as far as staying at, I think Rodney Bay is preferable, because of the beaches, the windsurfing, other watersports and access. Pigeon Island is worth a visit. Soufriere is very interesting, dramatic with the Pitons and the forest, but somewhat isolated. The roads from there are very difficult, although I heard that there has been improvement. Nevertheless, if your friends decide to stay in Rodney Bay, they should make the trip to the Pitons and the forest. An absolute must in St. Lucia. There are various excursions, but the best are per boat.

Castries, the capital, is quite run-down, very populated, but still worth a trip for the markets and a genuine Caribbean atmosphere. Not pretty, in our tourist sense.

Hope this helps, Frieda