My family thoroughly enjoyed our trip to and around Dublin! Cathal's suggestions are spot on and he was very communicative.
We highly recommend Fallons Pub, as well. Be sure to arrive early enough to ensure a seat - it gets busy each night!
Cathal's apartment is in a great location. Just around the corner from St Patrick's Cathedral, a quick walk to a "Bite of Life" for amazing breakfast, coffee or juice, and bus stops. This is very close to the city center and fantastic food all around!