I lived in South America for near 2 years - mostly Colombia/ Venezuela, some Chile/ Peru
If you can't find a punt then you are not trying!! Wall to wall. Local papers will show "establishment facilities" plus lots of Indies. They will be at the upper end of the price range of course because they have paid for the adverts - but still cheap as chips relative to Europe/ UK. Bars will always have a few freelancers and they will usually make their presence known.. Unless you are fluent in Spanish and have a "latino" complexion then again you will pay over the odds - but still cheap. If you look like a gringo and wave money at a bar the ladies will queue up for you.
Been there, done that - and I was 50 at the time so you do not need to be some youngster. They want your money not your body (other than temporarily)
Just take care about your personal security. Never carry too much cash and no rings/ chains/ fancy watches etc.