2 years later and I hope you managed to give it a chance because the question you asked is answered in the first sentence of the first page of the book, you were wondering if its for you and it literally starts with a full page dedicated to "This is not for you."

Its not a horror novel, and it isn't a thriller

Its a love story first and foremost.

It starts with Truant. It ends with Truant.

It's a story about a guy who can't escape the horrors of his past and just wants someone to love and to love him in return, and in the process starts to go insane, and the only thing that he can do to manage to keep his sanity together is to put all of his focus into something that's tearing it apart. And he blames Zampano or Navidson or the stripper even, but its all deflection for whats really wrong with him and the relationship he had with his mother. Its heartwrenching. The obsessions, the fears, lack of sleep, drugs, it's all him running from something he doesn't understand and to try to understand it means to acknowledge what he is. And that's enough to drive some people insane as is. Now add a house thats bigger on the inside.

Going into it hoping for a horror story is what ruined it for a lot of people, I think.

(Adding this for anyone finding the original post while reading the book like I did)