Vietnam: Wifi, coffee, honking, pho

Stephen organized a short but fun trip to Hanoi and Halong Bay (north Vietnam) over Easter weekend.  To our surprise, despite relatively low living standards, high pollution with scooters/cars - most of their cafe's have wifi! Wow! Pleasant.  Additionally unlike their tea obsessed Asian neighbours, coffee is the drink of choice in this former French colony.  Sadly development is clearly sub-par with scooters and pot-hole filled roads. Additionally the drivers HONK every other minute - even if there are no cars around. Needless to say the main streets are very loud.  Pho noodle soup is fabulous, cheap and readily available.  Not much vermicelli (bun) to be found (maybe that's in Ho Chi Minh / south?).  We loved the people and the food. Final observation - their architecture is TALL narrow multi story homes. Anyone know why?