PH! with a Virtuoso or Prive rate.

The trick is... the real cost to you would be 50% of the rate you see online.

Per law the hotel has to charge you in Argentinian Pesos. The "oficial" rate is ~112 ARS per USD. If you pay in USD cash or with US credit card that is the rate for the exchange. But there is a parallel "illegal" market which reflects the actual value of ARS, it's called "dolar blue", you can go to Florida street or many other places and get up to 220 ARS per USD. The current exchange rates can be found at dolarhoy .com
This applies to everything in argentina, never give dollars at a rate less than 200 ARS per USD.

As a plus, visitors do not pay IVA (Tax) on hotels stays, so you are are saving 21% extra.