Where to start it. Story i guess?
If you want some action or fast stories look somwhere else, Aria is not that. It is kind and gentle story that will slowly lead you into the magnificent Neo Venice. It is relaxing and i really can say amazing story.
Both art and sound are good, relaxing to eye and ears and that is all i will say.
Characters. There is tons of series where many even main characters were forgottable, boring, even annoying. That is not case here. Each character is unique and all of them you will remember for long. From three fairies Alicia (my personal favorite), Akira and Athena which were all different, to the main characters Akari, Aika and Alice. Each of them different, unique, loveable. You will never feel any of them boring or annoying. To the rest of the characters of course.
I enjoyed watching this series. It was one of few series that ever make me cry but again i was happy for our main characters. "Life goes on, time do not stop but moves all the time. Cherrish those around you and cherrish your time with them"
I feeled happiness and sadness together with characters in Aria like i was there. I am glad i watch this series. As a manga collector, i am also glad and proud to have all the volumes of Aria the masterpiece and while i do not collect blue-rays (Anime) i have all of Aria. This is very special series and i deeply recommend everyone to watch it. It may be boring if you didn't use to this kind of series but i guarantee you will enjoy. Please watch.