I think the album does fall into art pop and dream pop with some chamber pop elements. That's also what RateYourMusic users have voted as the top genres. It's very hard to ever source a genre for an album because reviewers very rarely explicitly say which genres an album belongs to, it's even harder to find several reputable sources that agree on a certain genre or a set of genres. This is the most explicit mention of a genre the album is supposed to belong to that I have been able to find which is why I added it.