My friend and I stayed at Angela's in a cozy room for a long weekend in Dublin. It was a pleasant and private stay with some very warm and welcoming hospitality!
The city center is about a 10 minute walk and a 20 minute Bart (train) ride away (which does not leave as frequently as I hoped). Also, there are buses that can be slightly faster - depending on the waiting time of the train. Recommendation: Get a visitor leap card for a fixed time like 2 or 7 days and then get the Bart trains.