It's standard fare for Jason Statham, but that's not necessarily a bad thing. When you want someone kicking ass, you get someone kicking ass.
For one, the action is nearly nonstop and there are plenty of excuses to break out the popcorn. Guys are thrown, stabbed, shot, the works. Nice choreography going around too.
Two faults I'll point out included editing and camera work. There's too much shaky cam for my liking and especially in the beginning, we transition scenes so frequently it'll make you dizzy. It works well for the pacing, but makes you think you're watching a music video or something.
The story is well put together, if a little underwhelming. I didn't care for the ending so much, just because of the overall tone. It's hard to explain unless you've seen it. Safe isn't a movie to seek out and watch, but a fun action movie to throw on if you have the time.