I feel that when the show first released, it was indeed over-hyped, but because there’s been no definite word on when there might be a 2nd run of the series, I think it’s popularity has died down a little.
I liked the time they took to tell the story from the manga, with multiple episodes for the various conflicts.
The hipster in me may have also just enjoyed the fact that I knew about Attack on Titan before it was made into an anime (the manga was featured on an Otaku culture show called ‘Imagine-nation’).
As a fan of the manga/anime, and someone who even owns a Scouting Legion Jacket, my personal rating for it is 4 out of 5. It’s not perfect, but it was very entertaining, and I liked how the story was written and portrayed.