We had a really nice two day-stay at Dardo's extremly centrally located flat. It's everything there you'd need to make yourself a quick dinner but there are also plenty of good food locations in walking distance - as well as many of the major sights of Dublin.
The only wee disadvantage is one pub across the street where people stand outside and make quite a lot of noise. But a good pair of earplugs (provided in the flat!) does away with that problem as well.
Last but not least, Dardo was very friendly and helpful, picking us up at the airport bus stop and taking us to the nearby flat, meanwhile giving us quite a bit of information about nice places to go.