I didn't like it nearly as much as the original.
As an action movie, it does okay. Cool fight scenes, a hot chick who the main character gets to make out with a lot, etc. But as a superhero movie, it's bland. It's largely based on things laid out by the original, so there is hardly any development to anything. The characters are boring, forgettable, and unimportant. The crisis is extremely generic, and the conclusion is underwhelming.
Spiderman was an extremely iconic movie, with real characters who cared about each other and interacted with sincerity. Not a perfect movie by any means, but a true superhero movie with meaningful developments. The Amazing Spiderman is cold in comparison, a forgettable action movie that I would never watch a second time.