Kieran's place is great. It's comfortable, and close to everything you may need - restaurants, buses, attractions etc. It's very central. Kieran is very helpful and will be happy to give you tips on what to do, where to eat, etc.
His place is very cozy with a good size room and a very comfortable bed. I would definitely stay at his place again if I am ever in Dublin again!
Thank you Kieran for all your help!