Make one clear choice
Choose by subject first, then by the ticket time and location. For a short stay, one visit that matters to you is a better anchor than two attractions squeezed around an awkward connection.
Places and guides
Book of Kells or Guinness
Subject, format and the half-day each would anchor.
A third city day or Howth
Depth in a collection versus an extra journey.
Which accommodation area
Central south city, Pearse-side or Heuston-side based on the route.
Continue planning
Book of Kells or Guinness: choose the subject
Compare Trinity’s manuscript-and-library formats with the standard Guinness Storehouse Experience.
Use the third day for depth or distance
Compare another Dublin museum day with a Howth excursion based on time, weather and transport constraints.
Three bases for three versions of the trip
Compare Merrion Street, Fenian Street/Pearse-side and Parkgate Street/Heuston-side for a Dublin short stay.