I am Mr. Long from Prince Cruise and I have gone around Hoan Kiem Lake at night many times to write an article about entertainment. Like its restaurant scene, the city's bars are up and coming. The Bao Khanh area, west of Hoan Kiem Lake, has perhaps the best established scene, with locals as well as expats propping up the bars. Finish your night at one of the bars here after dining out or seeing a water puppets show, or if you like to boogie, have a few pre-party drinks before checking out the local clubs.