St Lucia is volcanic, steep and green. In the southwest, the twin Pitons rise straight out of the sea beside Soufrière, a UNESCO-listed landscape of reef, rainforest and a steaming volcanic crater. Hotels here are built into the hillsides, with open walls facing the peaks.
It is the island we suggest for honeymoons and for couples who want to walk, dive and eat well as much as lie on a beach. We often split a stay between Soufrière for the scenery and the north around Rodney Bay for easier beaches and restaurants.
The honest caveats are roads and beaches. The drive from Hewanorra airport to the north takes well over an hour on winding roads, and the beaches are good rather than great. If sand is the priority, Antigua may suit you better.