I've been here and to a one on James St, both small, one screen rooms, generally it's bi/gay males, in fact only once have I seen a lady in one and even then I think she was a plant by the owner. Habe some good time in both. There's a cinema in the basement of Basic Instincts too and it is certainly aimed at the gay/bi male.
There's one in Galway and Limerick too, not sure about the rest of the country.