There are no 'truthful' reviews, there are only opinions. The trick is to find a reviewer who sees things as you do (or indeed one who thinks opposite, because if they recc a book you know to avoid and vice versa!)
For instance, there is a very popular fantasy author who I have tried and tried to read. The prose is good, the characterisation fantastic but...but for me he doesn't write what I'm interested in reading, or characters that I actually care about. So a slow scene with some description becomes a slog, because I don't care. etc. Other people rave about these books, and maybe that is their truth, but my truth is, can I read something else now please? With other authors, I may be dazzled by the prose but be frustrated by the fact I've got 100 pages in and nothing has happened yet. These are my truths, as I read, and according to my own preferences.
In the book business, once you get past a certain level of 'competent' everything is subjective. Maybe lots of people liked the book you didn't, for reasons that baffle you as much as they baffle me for those bestselling authors. One man's meat is another man's 'OMG NO! ACK, POISON!' after all.
Find a reviewer who looks at books as you do. That will be your 'truthful' review. Mostly...