We stayed three nights here and loved the neighbourhood of Stoneybatter, it's close enough to the centre while still being a great mix of new and old Dublin.
The room was as pictured, the street is quiet, and we slept comfortably. It could get cold but the heater worked quickly. The living room was cosy with the fireplace and of course their adorable puppy. Sean and Marcin were helpful with suggestions of what to do in the neighbourhood and for day trips.
One thing to note is that there is only one bathroom, and if the other room is rented out that means up to six people to one bathroom.