If you're going to stay in Dublin, give Chapelizod a try. We loved the village feel and Phoenix Park is an amazing walk. Cafe du Broc just down the street makes incredible french toast for breakfast.
Susan's place is cozy--we enjoyed ourselves thoroughly and she was prompt to answer any questions. We were able to check ourselves in, and she had a great welcome package ready for us. Even though there's no kitchen she did provide a coffee maker, hot pot, and toaster, and a small fridge that can hold a few items. The main bed was a bit small for my wife and myself, but we made it work. The area was quiet and we slept well. Would definitely book again!