This was the cheapest place we could find in Dublin and there's good reason for that.
Apparently, the location (Dolphin Barn) is one of the most dangerous places in Dublin (heard from many locals) although to be fair we didn't experience anything firsthand. Would not return, however, based solely on what we heard. There is indeed a bathroom, as described, but there are also up to 16 people staying in the 'Airbnb'... With only one bathroom. The bathroom was also in some state for the duration of our stay. Lastly, the given codes didn't work upon entry so we had to call and wait a while to get the correct ones.
On the other hand, it was only roughly £20/person/night which is cheap as sweet buggery.
God save the next guest who dares enter this hideous abode.