One of the first comments in the movie becomes the corner post of the irony of urban life. Paul states "I feel sorry for those Bulgarians.." while living in conditions that are as bad as anywhere. The actors did a great job, and you feel hungry and cold and angst with them. If the director's intention was to get viewers to feel empathy for the main characters, it works well.
The setting, the boy's hometown neighborhood, provides links to the boys' past and some later conversation gives an indication how their state of affairs came to be. The pace is a bit slow, but dramatic rather than boring. Making movies about junkies, it's easy to be dramatic and provide impact, this one does well. Not as graphic as it could have been, but definitely satisfying. Entertaining and quite sobering, probably a good watch for any 14yr old urban male as an education of consequences.