I was really disappointed. Love Hades and Serena did get the humor right. But it felt so chaotic. A load of repeating (especially in the beginning) and not telling more..about Hades.
I think there was a whole oppertunity not used. The ending also felt so rushed.

The role of Circe is superconfusing too. Her role and character changed quite a lot through the books..having her as a goddess too was a bit too much.