Display MoreThere is a useful simular here.
Your 100 EUR hotel in Rome, which is 117 USD, would end up costing you 15491,97 ARS if paid using an Argentinian credit card.
I exchanged yesterday at 140, so you would spend 110 USD instead of 117 USD.
This is without taking into account any intermediary fee or credit card conversion fee, which will probably take away any convenience in such deal.
No it does not, because the website uses the official USD-ARS rate to convert it and you will then get billed in ARS. So there is no USD charge on your credit card, but rather an ARS charge.