First of all, let me just say, it is incredibly hard to write this review for two reasons. One, the synopsis on goodreads and the synopsis on the actual book jacket are different. Two, I'm having a hard time determining what's a spoiler and what isn't. Before I say anything more though I have one vital piece of advice for everyone before they read this book. Do not flip to the back of the book. I wanted to see at which point the book really ended because there's a glossary after everything is said and done. Do not do this. You won't realize it at the time, but basically seeing a single word is a spoiler.
All right, I do feel safe in saying that I was incredibly happy with the POV choices for the series' conclusion. I loved that Riordan returned to a more focused highlight on Leo, Piper, and Jason, much like how the series began. However, I will say that there are 5 POVs and every single person will be incredibly happy with the other two choices. I felt like everyone's story was balanced very well.
Hands down, one of my favorite parts was the fact that Percy and Annabeth didn't dominate like they did in the previous book. Don't worry, my friends, there's still some Percabeth action.
The House of Hades fully developed Frank and Hazel and, now with The Blood of Olympus, we see Riordan finishing the character development for the rest of the crew as well as some of their trusty friends, whom I will not name.
The pacing was wonderful. I didn't dread a single POV change because the story attached to each one was incredibly entertaining. I do think that it's definitely worth mentioning that Octavian gets his just deserts. Seriously, no one could have asked for a better ending for the traitorous scum bag.
In short, The Blood of Olympus is basically the best book in the series and you're all going to flippin' love it.