I was incredibly happy with this apartment. We were on a tight budget due to the expemse of staying in Dublin and just being able to do pizza or sandwiches in our perfectly equipped small kitchen was a great saver. There was also a washing machine, and it was so handy. When the shower decided one morning to reduce to a trickle it was fixed before I got back from a day out with just a quick call.
You collect the keys from an office, but you can arrange to be collected from the airport, driven there then driven to the hotel, which I recommend as it's a good introduction to Dublin.
The beds were comfortable, everything clean, lots of towels and if it had been cold extra heaters. This particular place was very handy for both tram routes.
My only complaint was the windows were single glazed and one night some people at the back were having a good party, and you'd hear the bells on the tram dinging, but that was the only thing. I paid a lot less for four than a lot of friends paid for a 2 person room at the conference :)