This book is very well-written and very involving in places but I did have my reservations about it. Patroclus's narrative voice is believable and gives a convincing account of his childhood misfortunes, the events which lead up to the Trojan War and the War itself. I like the depictions of characters like Odysseus and Agamemnon very much, place and mood are very well evoked, and there are some exciting and very interesting episodes.
Madeline Miller is very keen to portray the relationship between Patroclus and Achilles as one of deep, enduring love, both spiritual and sexual. Whether or not this is justified by the source texts is arguable, but it is a noble aim. However, what we actually get is long, long periods where Patroclus moons around after Achilles like a love-sick puppy, to the point that I felt that the author herself was the one in love with Achilles and wasn't going to miss an opportunity to write a beautifully constructed sentence about his muscles, his hair, the curve of his chin or the soles of his feet (which seem to hold an endless fascination for her) and so on, which I eventually found almost unendurably tedious in places.
There were sufficient good things about this book to make a three-star rating seem very churlish, but it's only just four stars for me. Many other reviewers here have obviously enjoyed it very much, but I can only give it a qualified recommendation.