The primary thing I disliked about parque arvi was getting there and back. It can get a little cold if you stay the night, so plan accordingly. Otherwise, it's a great trip. Not much to it really, it's just a generally clean (but not everywhere) park with some nature trails and some neat little pueblos. Expect simple and you'll be happy, but nothing amazing.
If you own or manage Arvi Park, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.