Hmm... this is what I'm talking about!

As far as I know (disclaimer: I may not be very reliable on this since I no longer live there - in SH as you are now), most foreigners gather in Revolutionary Bar, Meigoumei Club (in Carrefour Changjiang Lu), and Soho Bar (in Hilton). You might not be able to go to those places in one night (like bar hopping) as bars there close really early like midnight to 2 A.M.
You should go and try Vienna Café, though.

Their cheesecake is really nice (way better than Applebee's for the same price).