I always read the negative reviews of books I liked. For one, I think people can be much more detailed about what they don't like than what they did. Second, I just want to know what made people dislike something I liked.
There seems to be an overall theme amongst the negative reviews that Kvothe is unlikable--but most of these reviews contradict themselves. They don't like him because he's arrogant, but then also complain that he's too perfect to be realistic and has no flaws. I think Rothfuss's intentions were to make Kvothe's arrogance one of his biggest flaws. Imagine you caught on to many subjects in school very fast, were number one in your class and had a relatively quick wit. You'd probably be arrogant, too, as I know the smart, popular people in my high school were. And it's Kvothe's arrogance that constantly gets him into trouble.
The theme of Rothfuss's book, to me, is the difference between the reality of a man's life and his actions, and the stories other men tell about him. That's why we begin with him in a quiet inn, then cut to local patrons telling wild tales. We are introduced to a character, The Chronicler, whose sole purpose in "life" is to find the truth about stories, to debunk myths and legends. But fantasy books *are* the stuff of myths and legends--dragons, fair maidens, faeries, wizards. So how do you tell the story of a renowned magical hero without the requisite exaggeration and outright lies? Without turning the hero into an unrealistic beacon of flawless unrelenting perfection? You tell both stories--the ones people want to believe, and the story that comes closest to the truth. And the truth is Kvothe is a rash, impulsive, sometimes selfish and very often stupidly arrogant man. These traits get him into endless trouble, which he sometimes weasels his way out of through his wit and talents.
You are given Kvothe's many legendary titles (like Bloodless) and then learn the slightly less-than-mystical reason why he was given that quasi-true moniker. What's masterful about Rothfuss's work here, however, is that even when you tear down the myths about Kvothe and get to the "real" story, Kvothe still emerges a hero. If that is too unbelievable for you, if it's not realistic for a character to be truly heroic and truly talented and truly great despite his flaws, then you won't like this story. It's just not cynical enough for you.