We were there in January and asked two different ex-pats about a safe ATM to get money. There have been many problems with having your cards compromised at machines in that town. The ATM at the local grocery store is safe according to the ex-pats. It is inside the door of the Dispensa Familia. That store is about a 10 minute walk from the lake. You need to be ready to enter your information quickly as it does time out super fast but we had no problem getting money.