If you are looking for somewhere a lot cheaper than a hotel to stay in when in Dublin, this is great.
It is in a nice area with a lot of good amentities, and is a 10 minute walk away from the main city centre.
The only thing I would highlight it that you are staying in student accomodation and the walls are very thin, so noise travels easily. We had to tell our neighbours a couple of times to turn down their music.
As I say, I would still recommend this place and I think it's a great alternative, but just keep in mind that noise is something you might have to deal with.