This place is a very good place to stay in Dublin: located in the south of Dublin but very close to the city center (either via public transport, walking, or cycling, depending on the weather and/or your willingness to exercise :-)).
The listing is perfectly correct - I was even surprised by how big my room actually was (larger than any other room I've seen in Dublin). The bed is super comfy, the bathroom has all that you can wish for.
Everything was very clean too.
A big plus of this place is that you can actually get to the kitchen, which is very convenient when you're traveling on a budget and cannot eat out every night. And the kitchen was even more furnished than the one I have in my present home (dishwasher included!).
You can also use the washing machine if you need to (didn't try it for this time).
Ronat and Fearghal are amazing hosts: communication was super easy with them for the check in, during my stay, and for the checkout. On the top of that, they are absolutely adorable people, with whom it is very nice to talk to in order either to get advice regarding the place or just as a general chat :-).
TL;DR > do book this place, I really recommend it to have a quiet spot to crash after a day walking in the city (and from which you can go for a run on the closest Sandymount beach) - and I would definitely go stay with Ronat and Fearghal again when I go back to Dublin.