Brazilian side of Iguazu Falls to Argentinian hotel

We are landing on the Brazil side of Iguazu and plan on catching the bus straight to the Brazilian side of the falls. I heard there is somewhere to store your luggage?

From there I’d like to get a taxi to take us through customs and over to our hotel on the Argentinian side.

Will there be taxis waiting or do we need to book one? Approximately how much would I expect to pay for the trip?