This is the old Ireland. Be sure to read about the history, the famine, before you go. It will mean more.
Take the Atlantic Coast Drive. See Keem Bay.
There is nothing like Achill Island on a clear day. You can't appreciate it if it is foggy and you can't see the sharp cliffs of the coast against the sea.
Find one of the blue flag beaches. Achill Island has many.
In a way, I don't want to share this but I wouldn't go to Ireland without seeing Achill and I don't think you should either.
We were there many years ago and, on the most part, it hasn't changed.
It is the best....of the west...