I live in the north inner city of Dublin so I am surrounded by pubs, but the best ones on my street (or just slightly off it) are: The Confession Box - lovely wee hole in the wall type bar, very much an older clientele, but easily one of the best pints of Guinness in the city.
The Black Sheep: more of a hipster haunt with boardgames and craft beers and music and all the rest, definitely a lovely way to spend an evening but as gentrified and as elegantly distressed as they make it it never quite feels like anyone's "local".
The Cobblestone - describes itself as "a drinking pub with a music problem" and it's pretty much a hub for traditional music, you are pretty much guaranteed to walk into to at least three or four musicians jamming away on fiddles and flutes and a set of pipes in the corner and sinking pints like they're going out of fashion.
The Hop House is a weird one, proper sketchy old Dublin landmark that went bust and was bought up by a Korean family who have improbably turned it into a Korean restaurant (with banging food) while still somehow maintaining the fundamentals of a well-run Dublin pub.
Still though - despite having all of these on my doorstep I prefer to walk ten minutes across the river to the first great pub I ever decided was mine. Grogan's on South William Street is hands down the best pub in the world, it has everything, surly and efficient bar staff, cheese toasties, deranged characters, a prime people watching spot, and a heritage stretching back decades.