Actually everything was quite excellent. Only little details we didn't like: wi-fi was not working super well, but still fine for holidays. There are a lot of signs in the cabins of extra costs if you stain towels or linens, which we didn't do. But the last night I accidentally broke a glass, I tried to warn Cecilia in the morning but she was busy -one of the service girls told me-, I explained to the service girl and they charged me 25 Argentinian peso for the glass. I paid, as it was not a lot of money (something like 2.5 usd) but I thought it was a bit bad-taste to have a guest staying 4 nights to pay a couple of dollars for breaking a simple cylindrical glass (which doesn't even cost 1 usd). Also the maids doing a cabin check up of all stuff when you leave is a bit excessive; still they probably had a previous bad experience to justify this behavior. Nothing too bad, really, I advice these cabins :-)
We spent 4 nights there with my boyfriend, his mom and her partner. The cabins were more than we expected: each couple had its own privacy in its room, and we had a common kitchen-living room and outside porch to enjoy together. Kitchen was quite well equipped. The swimming pool area was really cool as well. It was nice to have a fenced area around all cabins to feel safe, and distance to the city center was quite ok for us (we had a rental car, otherwise it is about 15-20 blocks but there are buses and cabs). It was meters from La Aripuca also. Cecilia, cabin owner, was very accommodating to our needs, she arranged for both rooms to have sommier double beds for us, upon arrival she gave us some pamphlets and tips for enjoying Iguazu area. The day before we left she arranged with her husband to do our flight check-in as well. Thank you, Cecilia!