I found Vietnam a little bit tame this year, so many tourists, more than I had imagined. In the Central Highlands where we spent most of our time, it was ok and the authenticity was still there but in other places, (Hanoi, Hue, Hoi An) and especially along the coast........Mmmmm.
Be warned if you are travelling to Vietnam and you want an off the beaten track plekje, do your research well.