6 Euro??? Where were you drinking???
Rathmines Inn, on Upper Rathgar road in Dublin6 has an excellent pub menu, with some authentic dishes (bubbles and squeak, bangers and mash).
The Inn at St Stephen's Green was the Fitzwilliams, about 3 doors down from the St S's Green Shopping Centre... if you're interested in really touring Dublin, stay there, as it's relatively inexpensive (225-250 Euro/night), for an excellent place to stay. I also would recommend the Dublin City Tour.. It's a bus tour, costs about 12 euro/pp, but your ticket is good for 24 hours, and it stops by all the architectural and cultural places of interest for outsiders, both north and south of the Liffey.
I dunno... everything's based on your personal preferences, I'm just offering a local's perspective...