You could just stay in the city center... there is a lot to see and discover. But , the nice thing about Dublin is there is a local railway network that brings you in no time to the end of the world. In this case skerries.... I might just show you arround a bit.
You will have to walk a bit. No the trai doesn't stop right in the middle of this sightseeing.
This is how a port looks at sunset , in a small village half an hour by train from Dublin.
Think it is worth a walk?
I was glad i did.