Stayed for 3 days at the Bourbon Cataratas Convention Resort this September. Hotel is close to the airport and to the Iguaçu Falls Park (taxi ride is about 20 reais = 12 US$) and has very good facilities (bar, restaurant, large swimming pool, well maintained gardens, natural forest area, fitness center, ecologic trail, sports court and more). The rooms are spacious, with a nice bathroom and amenities; minifridge in the room, as well as a safe. Good breakfast with many different options everyday.
My only complaints are the room's furniture, that look a bit old (not much of a problem) and the TV that had a bad reception during my whole stay (even the local channels).
All in all, a good choice and a pleasant stay.More