The most visited tourist center in El Salvador at Easter — more than 100,000 people in that week. Its name in Nahuatl means "river where the Amates sink". 33 blocks of rainforest with natural water pools. "Amapulapa received more than 100,000 people during Easter. That tells you all about how good it is. If you want to avoid the crowds, go during the week — you have the place to yourself."
How to get to Amapulapa?
Bus 116 from Terminal Oriente to San Vicente, then local bus to Amapulapa. By car it is ~60 km from San Salvador, 1 hour.
When to go to Amapulapa to avoid crowds?
It's almost empty during the week. Easter and August are the busiest peak seasons. If you go on those dates, arrive very early or expect it full.