We stayed here as it was less expensive that the other side to camp.
We spent the night at the first parking (the further) which is the less crowded and calm during the evening. You only have toilets but you can walk for 5 minutes and have the showers.
The site is extremely crowded. Don't expect to be the only here. But it's true that it's nice to see even if your are around 1 millions others tourists! 😋
Place: El Chiflon
Visited: December 30th, 2017
Location: 16.18694, -92.27588