I did not find it particularly good. Sure, I learnt some things I did not know, but for the large part I was turned off by Harari's self-assurance about a time for which little archaeological evidence exists. It seemed very unscientific to me.
I read the book around a year ago and I remember him pointing out the uncertainty to his claims. It was simply his personal research and views which I think should be taken at his face value. Sure, there might be a few things wrong here and there but that book left a lasting impact on me with regards to how I perceive day to day generic things.