Also, Wikipedia, Right Stuff and Anime News Network have almost the same description which is
Maria Holic revolves around a high school girl named Kanako Miyamae, who is scared of boys and breaks out in hives if a boy touches her. During her second year of high school, she enrolls in an all-girls school hoping to find a female romantic partner. However, her ideal candidate, Mariya Shidō, turns out to be a sadistic cross-dressing boy.
Now sure, the premise might be interesting, a story about a girl getting over her fear of men through dating a cross-dressing guy (going by only what's been quoted) but if there is one thing I really, really, really really really hate it's being lied to about shoujo-ai/yuri, so how is Maria†Holic shoujo-ai/yuri? Are there actually lesbian relationships in it?
NOTE: I ask fully expecting spoilers.