Hmmm. 2.5⭐. Very patchy.
It's not clear to who the audience is meant to be for this book. It's clearly popular science rather than a real textbook, times the writing is so opaque the only a proper physics will be able to understand it. I am far from being hard of thinking - I'm a former university lecturer in computer science - and I also so have a strong interest in cosmology and particle physics, having read many books on both subjects over the years, I really struggled with about half of this book. Where I could keep up it was fascinating and thought-provoking, but sadly for too much of it Hawking assumes too much background knowledge on the part of his audience.