I have reviewed a number of books for Christianity magazine (now Premier Christianity). I was given word counts, which changed over the years and included Review specials which were much longer. The length of the review is thus no indication of how much I liked it. At times the word count was a challenge. On occasions the review references matters relevant at the time.
A review is of course just my opinion. I hope they help you decide for yourself whether you would want to read the book.