Well, it certainly wasn't what I thought it would be. Let's put it that way. I was hoping for Robert Pattison's voice to be sweeter and "musical" as stated in the book. His voice was just plain ROUGH. Kristin Stewart was a bad actress at some times. Near the end, in the hospital, when she was telling Edward not to leave, it appeared that she was having a body spasm or loss of lines because she was stuttering and twitching for almost 2 minutes straight! Every time she spoke, her head did a little jerking movement which I thought was totally odd and un-Bella like. Also, her voice was FLAT. No sweetness or girliness. At some points, when she was saying something about love to Edward, she said it with NO FEELING AT ALL. I don't think she was good for the job.
At some times, Robert Pattinson too could have improved his acting. When they first went to Biology together, and he saw her, his cringe was more like a full body lockdown. He was just slowly inching away from her seat. That scene could have been done much better.
All in all, I think Bella shoudl have been casted to someone with more girlyness. Although the character Bella keeps to herself and isn't as girly as Jessica, they could have casted someone with at leat more enthusiasm and dedication into making this the movie of the century! The movie was also too rushed and they completely left out the blood typing scene which is a key scene in the book that builds up to the climax: Bella discovering Edward is a vampire.