Dagan's place is a great spot to stay. The location is just south of the Guinness storehouse and only a 15 minute walk to the temple district. Having parking included is a great added bonus as the streets of Dublin can get packed! He has instructions for everything in the house which is great, as sometimes figuring out the water heater situation in Europe can be confusing.
I will say this though, the water heater (or whatever it is) is extremely loud. So anytime water is turned on in the apartment you will know. But honestly, it wasn't that big of a deal.