I like how sex positive the book is, and there is diversity in sexuality in a way that felt normal even though it's based in the late 90s and sexuality in the world then was not quite as accepted to be fluid. But Catherine House is it's own little world anyway so it felt believable. The love interest

Theo

as a character seemed inconsistent to me, so in love with the idea of Ines instead of actually Ines. In the end, very few people truly understood Ines and that seemed so lonely.

It also ends on a cliffhanger and that felt unsatisfying, but at the same time, I understand that open-endedness was the only way for it to go without an entire other book

I feel like I'm going to sit with this book in my mind for a very long time and never actually understand it. And there's nothing wrong with that.
I wouldn't recommend this for plot readers. Not a lot happens in this book, and the structure is weird. It's all about the characters, specifically the lead. You're in her head dealing with her confusion, and it's pretty great.
Also, for me, the depiction of stressful, exclusive, small college pressure was just very, very well done. I've known people that handled college like almost every one of these characters. It was a highlight to read for sure.