Before you visit a new country, it is important to know the rules for the local trade.

Update 2024: At the moment, your best option is Western Union.

As you may know, paying cash opens the possibility of getting very interesting discounts in Argentina. In fact, all Spanish courses at La Montaña Spanish School are subject to discount when paying cash.

Recently Revolut developed an application through which you can obtain cash at very affordable rates in ATMs arounde the world. If you are in Bariloche. See the site: https://www.revolut.com

Also, recently Revolut (https://www.revolut.com) and N26 (https://n26.com) have developed online accounts you can manage through an application on your mobile. Both services offer ATMs withdrawals with a very low fee. In fact the first three transactions are free or charge.
Because of the very high ATMs fees using standard banks, most of our students struggle to obtain discounts and end up paying high rates with credit cards.
There are also many other different ways to get cash in Argentina avoiding the excessive ATMs fees. In Bariloche there is a good net of money transfer services you can choose from.
One interesting option is sending money to yourself, so you will have enough cash to pay different services at very affordable price. You need to check beforehand how much you will pay for transfer fees with each company and compare to the 10% up to 20% fees the ATMs might charge.

Which money transfer service have offices in Bariloche?
Here you have a list of money transfer services through which you can get cash in Bariloche:
https://www.riamoneytransfer.com
https://www.westernunion.com
https://moneygram.com
https://www.xoom.com

If you are in Buenos Aires, Mendoza, Rosario, Puerto Madryn or La Plata before you get in Bariloche, you can use AZIMO, (https://azimo.com/)  which offers the most affordable fee and also first transactions free of charge.