Carols place is a good central location, less than 30 min into the heart of the city (Temple bar area). There was a bus service (which we never used) really close by. Plus a tram that was about 20 mins walk away, which we caught to get to Guinness factory. Carol was accommodating and flexible around our check in times which allowed us to drop bags off so we could explore the city and maximise our stay there. Would highly recommend.