Take the N7 from Naas to Dublin. Following the signs to the city centre, you will join up with the N4 at Kilmainhaim.
Continue down to Heuston Station and over the bridge. Continue along the quays keeping the river on your right to O'Connell Bridge and turn right over the bridge onto D'Olier Street, then College Green and around by Trinity College on to Nassau Street.
For the O'Callaghan Alexander, Davenport and Mont Clare Hotels, keep left and vere left at the traffic lights on to Lincoln Place, staying in the right hand lane.
The O'Callaghan Davenport Hotel is directly in front of you, the O'Callaghan Alexander is beside it and the O'Callaghan Mont Clare Hotel, across the street