To take full advantage of the park, you’ll need to spend the night. Camping is free at Los Planes – bring all your own equipment, food and water. You are supposed to get advance permission from the National Parks and Wildlife Service at the Ministerio de Medio Ambiente in San Salvador, but many campers have no problem just turning up and paying the admission. Admission is US$6 per day for foreigners plus US$1.50 per vehicle, required for taxis as well.
Try removing some filters. Alternatively, there are some nearby lodgings with availability below.