Traveling Belfast to Dublin last day of RS tour. Planning to stay a day in N. Dublin at the Castle Hotel and see historic sites in the area as time allows. I will take the Aircoach express from Belfast-Europa Hotel. Is there a stop near the Castle Hotel? Or, if at the airport, I can take a local Aircoach, airport to hotel.
Edited:
If you take bus 705x operated by Aircoach, then it ends at the Gresham Hotel on Upper O'Connell Street, which is only two blocks from the Castle Hotel: http://www.aircoach.ie/timetables/route-705-x-belfast-dublin-airport-dublin-city-express.
Other options are:
Buses X1 and X2 go to the Busaras bus station in Dublin. See schedules at http://www.translink.co.uk/Routes-and-Timetables/airport-services/. To the Castle Hotel is a 15-minute walk or an 8-minute ride on local bus #747. If you take a train to Connolly station, the route is very similar, also bus #747 (which also serves the airport; it's a multi-purpose bus).