We stayed at Pirayu for 3 nights so that we could visit the Iguazu Falls. It was a very comfortable stay - the room was large with a beautiful view over the garden and river, the bathroom extremely spacious with a fantastic shower. The bed was enormous and we slept well. The grounds are spacious with a good swimming pool, tennis courts, and small football area. There was a great range of choices at breakfast - fruits, juices, yoghurt, cold meats and cheese, toast, and cereals, as well as scrambled eggs and a toastie making machine.
The hotel is within easy walking distance of the main centre and is in a quiet area near the river.
I was also really impressed by the friendliness and helpfulness of the receptionists as well. I would have loved to stay longer.