If you get infuriated reading from a character that is very naive and submissive, skip this one. There are some explicit stuff I'm not sure needed to go as extreme as they did, so check trigger warnings. 

I read this book in 1 day. It was very bingable and easy to read. It's a set-up book for the series. I knew going in that the romance will come later so I expected a slower start. I wish we had more information, but it's very intentionally written in a way that feeds you information slowly, over multiple books, so if you like your stories fast paced this won't be for you. 
The rating could be a bit inflated considering how low my expectations were going in, but I'm really happy I finally gave it a shot. I'll probably binge read the whole series in the coming months.