Our family stayed two nights here and had a great time. We walked around the corner, got the key from SPAR - which was in a box of keys from what must have been other stays in the area.
This is not the newest/most modern stay, but it was the most amazing location and fit our needs well. It was clean, pretty well equipped, had a great view, comfortable beds, and decent amenities. We were a brief walk from so many places and restaurants.
There was some city noise as you would expect with such a central location, however I sleep with noise at home, so it was not a big disruption for anyone in our family. We had the windows open - one night we heard a drunk singing Happy Birthday from one of the pubs, maybe across the river, but overall we slept well. I would stay here again in a heartbeat. It really lets you enjoy a lot of Dublin.