Direct answer
The central beach next to the lighthouse is the public benchmark — wide, calm, sheltered by the reef. Punta Brava (north) is quieter. There are no big beach clubs (Puerto Morelos is intentionally low-key) but several beachfront restaurants serve as casual beach hangs. Sargassum is real but the reef offshore keeps water comparatively calm.
Puerto Morelos has one main beach running the length of town — sheltered by the offshore reef (~500m out), so the water is calmer than Playa or Tulum. The central beach next to the lighthouse is the obvious access point. Punta Brava to the north is quieter. There are no big beach clubs by design — locals like it low-key. Beachfront restaurants like El Nicho, John Gray's Kitchen, and Doña Triny's serve as casual beach hangs.
