What Placencia actually is A 16-mile sandy peninsula that ends in a walkable village where people actually live.
Placencia is the long sandy spit on Belize's southern coast, about 100 miles south of Belize City. A single road runs down the middle for 16 miles, with beach on both sides for most of the length: Caribbean on the east, lagoon on the west. The village sits at the southern tip, where the peninsula ends.
The village itself is small. A few thousand permanent residents, a main street, the original pedestrian "sidewalk" that's still the most charming part, around 40 restaurants and bars, a small marina, and the boat docks where most tours leave from. You can walk anywhere in 15 minutes.
The beach is why most people come. It runs the length of the peninsula on the Caribbean side, wider than the cayes' beaches and softer than San Pedro's, with less foot traffic. Sargassum can affect it in peak summer months, but the lagoon side stays clean.