I read this when I was young (middle school ish) and I loved it, but after rereading it as an adult, I couldn't take the clichéd plot this story takes. The only thing I still like is the chemistry between the two main pairing. I also like how they started dating early on, so there's no stupid 'will they or won't they' drama that's typical on most shoujo.
The thing I don't like is that the obstacle to their relationship... is clichéd as fuck and over the top, sometimes without making sense. While I could read it when I was young, I can't really stomach these ridiculous plot as an adult. I had to stop rereading and skip to the ending (since I already read it before anyway).
If you don't mind overly clichéd story and are looking for a pair that stands equal, respect, and support each other, then you might like W Juliet. If you're tired of typical shoujo tropes, then you might not enioy reading this.