The best ATM in Rincon Puerto Rico is the one outside Banco Popular on the 115. At least in our findings, many of the other ATMs around Rincon don't always have cash to dispense.
You will find ATMs in some of Rincon's bars, bakeries and markets - but don't worry if they don't function properly for you. Just head to the 115 on the South side of Rincon's Downtown Plaza. Banco Popular is only a few shopping centers outside of the Plaza on the 115. Their outside ATM should always be accessable and working. Enjoy your Rincon Vacation Rental!!