The hotels in Argentina operate differently to hotels I've been into in the UK and Europe. If you go for a local hotel I find the staff are not very helpful compare to an International Brand. The local hotel staff attitude is we have many happy customers and if you are not happy go somewhere else.
With a International brand you know they are trained to deal with different Nationalities and can usually resolve disutes promptly. Local Hotels in my experience have poor websites and in one case when I had to pay my fee which was a eye opening experience. I had to go to a bank and deposit the hotel fee. Then fax the receipt over to the hotel.
I prefer to use an International brand when traveling abroad and also where you can collect points from a loyaly scheme. Also international brands have the power to give discounts and incentives. Its alway about sometimes you pay for what you get.