Yo Timo! I studied in Lancaster last spring! Anyway, I didn't find any (big) clubs to party at while I was in Lisbon, we mainly stayed near the old town at the clubs/bars on top of the hill in the old town. BUT, we did go on a great bar crawl while we were there that got everyone pissed and ended up in a pretty nice small dance club/bar. If you go to the top of the hill in the old town you will find plenty of bars and a few dance clubs that might please you. The other thing to keep in mind is that sometimes the best parties in places like lisbon might be in the middle of the street. Depending on the night, everyone goes into the bars to get a drink and brings them out to the street to party. Lisbon is a pretty chill place, hope you have fun.
