Been there a couple of times, the euros in 2012 and last November for a friendly, plenty of decent pubs around the old town square, friendly spot about €15 in a cab from the Airport. Was too pissed to make it to any clubs. Strip club just off the square prices were high enough got chucked out for haggling too much. Was hoping Poland might play their game v us (ireland) in Poznan but looks like they will play them all in Warsaw