Before reading the Battle of the Labyrinth I felt that Percy Jackson and the Olympians series kept getting better the further along I read, and thus expected this one to be the best one of the series so far. I was not disappointed!
The story is getting more intriguing and diverse in this book, at the same time as it is getting more focused. Riordan is handling the more serious sides better, and though the humor is still very much in place, I feel that it is less silly now.
I also love the growing intrigues, though that might just be me preferring the characters being older than they were when the story first began.
Over all I am very pleased with this book; I'm feeling more confident in Riordan being able to give me as a reader what I'm looking for which makes me able to relax and enjoy the ride. I highly anticipate the finale of the series, and will jump straight on that right away!