David's house is perfect for exploring Dublin. We took the train into Dublin Heusten and walked over to his place. In general, I didn't find the need to use any means of transport since everything was walkable.
The place itself was very clean and tidy. Although the bathroom is shared, it never felt like it was.
David himself was very helpful. He gave us incredibly helpful tips of what to visit in our limited time there.
This is a no brainer when you consider the combination of the price, location and host friendliness.