I stayed at this address due to it's proximity to the start and finish of the Dublin marathon and if that is also your aim, you will struggle to find a better located room.
It is also very convenient for getting to the main streets, pubs, restaurants, museums etc of central Dublin (5-10 mins walk).
The room was exactly as advertised - clean and comfortable, and Helen is a very good host with efficient check in and out.
All in all - well recommended.