Give me my destination

ok, i have been charged with the organisation of an annual lad's weekend abroad. i'm looking for somewhere lively, cheap and interesting and cheap. we are looking at prague, warsaw, barcelona, but i'm open to other destinations

this is going to be a lad's weekend essentially, so alcohol is going to factor in, but most of us will be interested in sights, architecture, activities and suchlike for the in-between drinking times.

we're travelling from ireland, so accessibility is tough enough.

well ilx, get to it, i haven't all night.....