There are many places in Mexico, but I have a favorite place to relax and have fun is in Morelos and it is very cheap, specifically it is the private club Marina del Sol.
Upon arrival you can only pay a day’s entrance or reserve a room in the club hotel you can also be in the general area or renting a bed outdoors for more comfort and for a low price is recommended; You can order your food and drinks right there or go to the restaurant.
At night you can go to the SOEN boat, you go from the tranquility of the club to a party in the middle of the lagoon, the entrance costs approximately $50 Mexican pesos, around 2 dollars and there the consumption depends on drinks or snacks.
Here I show you a short video of what I recorded: