San Pedro La Laguna is in Guatemala. It is a fairly laid-back small town across Lake Atitlán from Panajachel. A major mochilero (backpacker) hub. Great food, small and walkable, and safe. Expect anything touristy to be priced touristically. San Pedro is best avoided the last week or so of June and the first week or so of July when simulated artillery shells are set off day and night, and amplified noise never stops.