Kafe Belgie is absolutely awesome.
Last time I was there on a stag with 20 people we managed to work our way through the 200 beers.
I was unucky with the draw and managed to get loads of strong dark ales, which didn't do me much good the following morning.
Legid Erf is great too. Very cosy.
If you want pub grub, Mick O'Connells Irish bar is yer man.
God, if I wasn't so drunk or stoned that weekend I'd be able to tell ye more.