If you can put your cost to the marina, and live like a Colombian. You should be able to do fine. If you shop in the clean American style grocery you will pay dearly for everthing.
The grocery next to Club Nautico had a lunch counter, and it cost half as much to eat there as it did to buy the same groceries. CORRECT, anything geared toward tourist is higher than
Miami. Living there will give you the chance to find where things are reasonable.
In June it was miserable hot, or storming a torrential downpour. You will need a/c.......
i2f