This was a super dark, disturbing, creepy book.
The story itself was great, very atmospheric, with well carved out characters. I can see why this author is compared to Stephen King; this slow-burn type of horror, with a good chunk of the story being spent on characterization and world-building, followed by the sh*t hitting the fan and the story picking up pace is really King-ish.
I can't say if I loved any of the characters, because most, if not all, are very dislikable.
Small Spoilers ahead: I think Virginia was the only character I really rooted for and well, let's say she deserved better.
On the other hand, I was sick of Håkan, and every time I thought we were done with him, he proved me wrong.
Besides that, I found Oskar a pretty intriguing protagonist and even though his actions were quite questionable sometimes, I felt for him too.

Now, the story itself aside, the translation was a whole different thing. I struggled with the translation, I thought it wasn't fluent, there were a lot of weird sentence structures and whatnot that slowed me down considerably.
I don't mean to judge the translator, I have no knowledge of the Swedish language, but it's very likely that a lot of the structural weirdness of the text was due to linguistic interference, which is sometimes inevitable. As a translator, I understand the struggles, but the text could've been edited better.
Because of my struggles with the text, I decided to listen to the audiobook narrated by Steven Pacey, while I read along with the book, and it was SO MUCH better.
The narrator was obviously reading from the same translation, but it was also different. It was as if the text was further edited, and the fluency had improved significantly.
I also enjoyed Pacey's narration, he brought the characters to life quite well.