Please, please disregard the official review. I understand that everyone has different tastes, but I believe ThePatches is unreasonably harsh. This anime presents a beautiful and touching portrat of first love. It is also among the most well known and well recieved Yuri anime, and is much loved by the lesbian community. Erica Friedman, President of Yuricon and ALC Publishing, says it best:
"But what really sets this series apart from the pack is the story itself. Fumi's struggle to understand herself in relationship to the people around her, her growth and her brutal honesty transports this story from the realm of the typical into a sphere of storytelling far surpassing most Yuri in general. This is a classic "character-driven" story, in which the depth of the main characters strongly affects what little action takes place." (Taken from AfterEllen, link provided below)
The anime is well worth watching and I highly recommend it. The story does progress somewhat slow and could perhaps also fall under the "slice of life" category. So bare in mind that it may take a few episodes to really get into it, but you will!
If you are looking for a more indepth or detailed review of this anime, Erica Friedman has reviewed it on her blog Okazu (http://okazu.blogspot.com/2009/07/new-anime-season-summer-2009-yuri-anime.html) and on AfterEllen, as sighted above (http://www.afterellen.com/TV/2009/9/aoi-hana-review?page=0%2C1). The review on AfterEllen does contain spoilers. You might read it after you have watched the anime. It provides some interesting background and insight.