Just watched Storage 24 and personally, I really enjoyed it. I can definitely see how a viewer that doesn't empathize with Noel Clarke in the first part of the film would hate it though. Since I like Noel (I mean, himself, not just his work, I don't actually like everything he's done, but I did like Kidulthood, his Doctor Who work and now this) I felt sorry for him early on, but I can see how he might completely lose people, and when the horror starts ramping up, if you hated him early on, you aren't going to have anyone to root for other than perhaps the blonde with the big lips (as opposed to the blonde with the chipmunk cheeks).
The creature work was okay, nothing special, but aside from it's feet and mouth, quite well done. It moves really nicely between the storage containers near the ceiling.
Oh, if you don't know, it's about a monster in a 24 hour storage facility that people get trapped in. There's some pretty subtle humour, that worked for me, even though it's far from being a horror comedy. So, yeah, consider it. If you're interested in a solid by the numbers monster movie against the backdrop of people getting over a break up, it's worth your time. I'd seen mixed reviews, and I do understand them, but as I said earlier, personally I really liked it.