Got a guy a few years ago who was excellent but very busy like all tradesmen these days. His name is Eugene McAdam and his no then was 01-4527557 or 087 2528787. He came highly recommended by a few different people.
If you run the search option here in AAM you might get some other recommendations as I think I have seen some int he past.
I had Eugene and his workmate tile my entire new house last month. Eugene did a FABULOUS job!!!! I highly recommend him!! He is skilled, honest, quick and reasonably priced. He is based out of Tallaght.