I think you've got a great set of recommendations there from Sean; the people who own the Black Sheep also own two other craft pubs in the city: Against the Grain (Wexford Street) and the Brew Dock (by Connolly Station) - the formula in all of these is fairly similar, but the tap list often varies a little between the pubs, so it's worth checking them all out if you have the time!
Plus, if you're looking to buy a few beers to have in the hotel room (or if you're looking for a few rarer bottles at a cheaper price) then I'd recommend looking at the website of the bottle shop Drinkstore in Stoneybatter: <!-- m --><a class="postlink" href="
www.drinkstore.ie/">
www.drinkstore.ie/
It's got a great selection (if the beer is in Ireland, it'll be at Drinkstore!) and is just opposite L Mulligan Grocer!
Hope you have a great time, and if you fancy a pint at any point then do send me a message - always happy to chat beer!
Cheers,
Alex