Ciro's is determinedly a place for locals. If you have not lived in Dublin, or are at least related to a native, there is no way that you would stumble on it. If, in search of an antique store, you went by the oddly located old business center which houses the place, you'd likely notice it as being a somewhat nasty looking pool hall, and nervously head for the collection of fast food options down by  I-81.
That would be a shame, because this place serves up good pizzeria style sandwiches, in somewhat downmarket surroundings. The sub you'd get is going to be better than what you could get at the Arby's near the Walmart, and the chance to see periodic visits from local town characters is kind of fun. I would not detour off the interstate for this  (you will get lost) but it is an easy few blocks from Dublin's antique stores. Pay a visit -- and begin to learn an essential truth about the South -- often it is the pool halls and dives that have the best food.