This is a DRAMA movie. Almost like an arthouse film. Not an ACTION movie.
There isn't even enough gunshots to call this an action movie. So, most of them who watched this who were expecting an action flick were disappointed as I can see from the reviews here.
The movie is a slow-paced one. It's mostly about the confusion of a hitman in hiding about trusting anybody. And George Clooney had done a wonderful job. The cinematography was also really good (for me). The Italian actress who played Clare also was great. There isn't much of a plot, just a thread. And if you are interested in slowpaced drama with very little romance, you can try this. Don't even consider this against James bond or mission impossible. That'll be a mistake. Overall, "I LOVED IT".