Q: easy 10 points here, since I wont get many answers!
A: Hey Lilule, dont underestimate Gualeguaychu!!! I've been there for Carnival and it's quite nice. A friend of mine has a farm in Gualeguaychu and its a very nice place, lots of horses, sunflowers, etc. I also loved Larroque which is a nice little town nearby. Go to Gualeguaychu for Carnival, it may not be like Rio but the parade is beautiful and the girsl wear costumes with feathers just like Rio!