Fantastic watch, will watch again, and do recommend.
I really wish more movies would follow this simple and great movie structure. Instead of a typical 3-act structure (not that it isn't technically there), the story is much closer to that of a video game.
You have a standard introductory act, but the rest of the movie is split into video game-esque "levels" that develop and unlock as Coraline makes new discoveries and completes different sections of the "map" / house.
There is a lot of messaging here as well, mostly concerning relationships between children and parents and how to navigate those in regard to real life events, but everything is "do not tell" levels of subtle so it's not in your face at all.
The Beldam itself is a magnificent creation of a "thing that bumps in the night" style of monster. While there is a lot left unexplained, there is plenty that is exampled about the Beldam and her world.
The movie also reminds me a lot of "The Wizard of Oz" in a few different ways so its good that there are family friendly movies of this quality that make vague callbacks to classic movies.