We travelled to the Cliffs of Moher and spent the rest of our time in Dublin. The apartment was great, very close to bus stop too. Taxis go all night long too so transportation was never an issue.
Really good wifi too! Lots of character in building.
If you're looking to check out the Guinness Factory or any other big attraction in Dublin, go early morning. We didn't know they sold tickets in the morning and rarely have any by afternoon. Same foe other big attractions.