The Apartment is wonderfull. It was very clear and had enough space for all of us. The only thing you have to keep in mind is that it is on a busy street so you hear the cars. It is not too loud but you may have to get use to it if you come from a really quite place :-)
You can walk everywhere and if you plan to rent a car - there are plenty of parcing spaces around the corner.
Christian was really friendly and helpfull. He explained everything and gave us good ideas where to go.
If we come to Dublin a second time we would definetly stay there again!