Just as an aside, I studied for professional accountancy exams over a 5 year period while renting in various Dublin areas. Exams were always in the RDS. I did the whole exam commuting by bus/taxi/walking etc from areas as diverse as Drumcondra, Dundrum, Palmerstown, Crumlin, Windy Arbour etc. It was quite stressful.
For the last year or so, I booked into a quality guesthouse beside the RDS and it was the best thing I ever did, 3 nights stay for the 3 exams, no commuting stress, no 4am alarm clocks and no having to leave house at 8am for a 10am exam.