Replying to Some questions about Montreal

This summer a few of my friends and i plan on taking our senior trip to Montreal. We're from Pennsylvania, and we thought it'd be a lot more fun to go to Montreal rather than the traditional beach week in maryland. I was in Montreal at IF3 this past September and had a great time, but i still have some questions. The biggest is where to stay. Can anyone recommend a hotel in a good part of the city, I'm looking to be near some bars and clubs. Also looking for some recommendations for things to do. Thanks a ton if you can help out.