The small twist that Joe puts on this gimmick, for lack of a better word, is that Everly is a pretty hardcore, violent action movie that all takes place in basically one room of a loft apartment. And that doesn't limit the film at all - there are just as many guns and bodies, and just as much blood and gore as any other action/thriller out there. There is never a dull moment, never an unimportant scene, and never a line of dialogue that doesn't add something to the plot and the characters. Plus, Everly is just a really, really fucking fun movie to watch. Look at Salma Hayek on the poster up there - that alone should make you excited to watch the movie.
Then again on the other side, there's a very serious story to deal with here. Not just the assault at the beginning (which is never shown but only heard, if anyone is weary) but also the whole world that Everly has to live in. She's in an apartment building filled with other prostitutes under the control of the boss, Taiko - not to mention the fact that Everly has a five-year-old daughter and a mother that she has not been in contact with for a long time. They are featured pretty prominently in the movie, as they become Everly's main motivation for surviving and enduring all the shit that is thrown at her over the course of this night.
Now, Salma Hayek. I mean, she fucking kills it in this movie. Literally. Of course we've known for years, ever since Desperado, that she could handle herself like a boss in an action movie, but I really think she shines so brightly here. First of all, she's just as gorgeous as ever. It's not hard for anybody, male or female, to watch her kicking ass in an apartment for 90 minutes. She is a true action star in Everly, handling weapons and also doing some hand-to-hand combat. But Hayek also brings a lot of heart and sympathy to the character of Everly, and in a roundabout way, to some of the rest of the cast of characters, like the other prostitutes and a character known only as Dead Man. Hayek makes Everly so likable that you might find yourself cheering out loud at the last frame of the film, like I did.
I also had to cheer for my new buddy Joe (who also gives a nice cameo at the end of the film) for really bringing Everly to life. The film is action-packed and visually interesting - there're some really cool lighting and camera work - and they could not have gotten a better actress to see this whole thing through. Loved this shit, see it soon!