This is simply a poor value.
PROS:
It's close to the airport (10 minutes by bus which travel frequently).
It's in a very pretty suburban neighborhood that offers a nice contrast to downtown Dublin.
Excellent wifi connectivity and speed.
CONS:
The room was described as "cozy" which means small... but it was crammed with furniture that made it impossible to unpack my suitcase. The closet was full of extra bedding and pillows that took up space and weren't needed.
The bed was extremely soft and offered no support.
There is a very limited selection of restaurants/markets within walking distance. I wonder if that was why my host didn’t respond when I inquired about that beforehand.
There is no TV, only a wall mount where the TV might have been.
The shower in the bathroom is extremely small. I'm 5'7" and 135 lbs, so anyone much taller/larger is going to find it very challenging to use comfortably.
I had no contact with the host (they were busy and didn't bother to introduce themselves) so I can't comment on their friendliness.
For less than 20 more euro, you could stay in a nice hotel in downtown Dublin that had maid service, free breakfast, a private bathroom and a concierge.