Definitely not up to the standard of Abrams' two films, seemed to be something lacking throughout. Some of the effects were outstanding but the little aliens at the start were a bit iffy, as were some of the Starfleet members, but the warp effect was cool.
Krall was a disappointing baddie, took too long to establish his reasons for bellicosity and I worked out the twist way before the reveal.
Spock and McCoy's interactions were some of the highlights of the film, and I couldn't help feel a little sad whenever Chekov was on screen. Jaylah was a good character, maybe she'll be seen in future movies (if there are any after this...)
All in all I wouldn't have minded so much if they hadn't fixed the projector when it conked out at the start..