From Dublin Airport by Aircoach When you exit the arrival hall turn left and you will see the bus stop for the Aircoach Bus, this goes to the city centre. The nearest bus stop to the Fitzwilliam Townhouse is Merrion Square, we are a 10 minute walk away. Walk up Merrion Street and at the next set of traffic lights turn left into Lower Baggot St. Continue forward for approximately 400 meters and the Fitzwilliam Townhouse is located at the next junction (Baggot St. Lower and Fitzwilliam St. Upper) on the right.