We have been to SXM a number of times and to Barbados once and have enjoyed both a lot.  This year we have some friends who would like to try St. Lucia in January for 2 weeks.  We are looking for any suggestions as to areas to stay, beaches etc.  We are two couples 50-60ish.  Have found a few places around Marigot Bay on Homeaway that sound great.  Thanks.