The only nightlife I saw in Hanoi was the Hanoi Backpackers Barcrawl, which was great. I got with some American girl but then bailed at 2 because I was going to Halong Bay at 6 AM the next morning. Apparently my friend said she was banging on our door trying to come in to bang me but I turned over, told him to fuck off, and rolled back over. To be fair, I think I puked that night at like 11, before I even made it to the first bar on the crawl.
Good times.
Good times.