The way I see it now is like this. The characters are absolutely despicable, and purposely so. The brothel in Amsterdam is part of the culture, and ended up being an easy way to get the whole sex and nudity aspect of traditional horror movies out of the way. I think it was a little too gratuitous, personally, and what Roth got away with in an R rated movie was amazing. After about 30 minutes, after the one night stands are all said and done, it picks up and gets tense. Merging into the 3rd act, it just gets nuts. Nothing is sacred, no holds barred kind of ****...just brutal.
It was a good premise, and the story came full circle with Jay Hernandez's little epiphanies when he returns to the hostel.
So, in a nutshell, I did like it more the second time around, but not sure that it's worth owning, but it was DEFINATELY better, and more mature and original than "Cabin Fever".