I'm reading this at the moment (about 2/3rds through) and it's getting a firm "meh" from me. I must admit that I don't tend to find stories about young people growing up all that appealing, but I won't turn against a book because of that - after all, it's a popular subject. I do think Fitz is a convincing young man, and that he isn't a "self insert woman", whatever that is supposed to mean. However, he is a very passive character. He spends a lot of time being told not to do things by gruff men, and I wonder if the story wouldn't be more exciting if the gruff men were telling it. The writing is fine, if not especially great.
But the real issue is that there is almost no plot. There are vague stories of the raiders and their crimes, but these have hardly touched on Fitz's life. There's not much description of the world outside the castle, apart from the names of some royals and some kingdoms. The suggestions that characters will do something exciting, or draw Fitz into a story, are all very vague. So while Chade, the Fool, Patience and some of the others are quite interesting, nobody is actually making the plot move forward - at least, not that the reader can see.