This is just a place you do not want to be in. It is in a side street with a bar (PG comes to mind) where a lot of questionable people are. The clerk told us : as long as we do not go more down this side street we are safe..... The place was dirty and very old. Because we have a spray against Bed bugs we were ok with that. That the street will have some noise is normal, but the bar across the street is another story. (Tattoo's,drunks and woman....) The bathroom/shower were not even close to clean so I cleaned it up. In Germany I know hostels and they are very proud of their reputation. Here it seems like, nobody really mind the dirt. We talked to several people and they had the same impression.
If you want to get to the Giant causeway, go from Dublin.More