Edit 07/06/21: Okay, after sleeping on it, my final rating is 4.5/5 
Edit 06/13/22: I lowered down to 4. I still like it and recommend it a lot tho!

Still very happy with this book. Madeline Miller's prose is beautiful without being too adorned. Even though you basically have the spoilers from the beginning if you know the Achilles myth, I thoroughly enjoyed reading it from Patroclus point of view. The only thing that it took that half star from me is the fact that during the 10 years Trojan war, Patroclus read a lot like a damsel in distress. He wasn't a soldier, yes, but he was a skilled medic and the men respected him a lot. It was touched, but not enough for me. But other than that, I loved this completely and would totally recommend. 

Don't know if this last comment is spoiler, so just in case: Pyrrhus you little piece of shit. I hate you.

I still need to keep processing what this story meant to me, but what I can say right now is that The Song of Achilles made me fall all over again for Greek Mythology and made me love a small character like Patroclus.