Serenity at Coconut Bay, Saint. Lucia Serenity at Coconut Bay in Saint Lucia leans fully into its name. The resort is made up solely of 38 plunge pool suites, each with 24-hour butler service and a level of privacy that makes the world outside feel distant. Evenings often revolve around the Greathouse restaurant, where fine dining is folded naturally into the all-inclusive experience. It is a couple’s sanctuary wrapped in Saint Lucia’s dramatic landscape.