Wander over to http://www.gethiroshima.com/ and read over the bar reviews, downloadable maps and any other stuff you might be interested in checking out in the area. Used to live near Hiroshima and it was the best source of English info. You can get also one of the maps in paper form at the tourist info in the underground outside the south exit of Hiroshima Station. It marks out the "dodgy" area (which really shouldn't be much of a problem, even with the ladies). Lots to choose from, be it all Japanese to mostly foreigner to a mix depending on what ya want.