Also can anyone recommend any good bars and nightclubs to visit.
There's plenty. Lodz has a mile-long pedestrianised main street, called Piotrkowska - trust me, if you're in Lodz you can't miss it. There are plenty of good bars and clubs there - many of the best through archways in courtyards.
Here's a link: inyourpocket.com/poland/lodz/bars-clubs/barsandpubs