We had a nice stay at Dardo's flat. It really is in the heart of Dublin and VERY close to public transport. Although we did not get to meet Dardo--he was traveling--he was very responsive to any questions. Great view right out the window and everything within walking distance. (We used the earplugs each night since being in the heart of everything means it is all right outside the window.)
Dardo provides an extensive list of bars and restaurants etc, and this is very helpful. Would definitely return!