Overall the hotel served the purpose - location is convenient, beds comfortable with 2 sets of pillows, room is big and food was ok. We had both breakfast and dinner and for both, the impression is the same - variety is ok but the quality and taste could be better (e.g. coffee, pastries, meat dishes). It is also on walking distance to a nice shopping mall where you can buy souvenirs, acai and some clothes/shoes.
Since the hotel and the area is revolving around Iguazu, I believe that the breakfast time should be adjusted to start at 6am instead of 6.30am. If guests have early tickets to see Argentinian side of the falls, they simply have no time for breakfast.
Regarding the rooms, a few small improvements can be introduced: the toiletries are really basic (e.g shower gel is some general shampoo which leaves your skin dry and doesn't foam almost at all), there are not enough towel hooks in the bathroom and there is no water cooker to make a coffee/tea in the room. We were on the first floor and there are a lot of tree branches brushing off the window, which was waking us up at night - maybe it would help if they trim those.