A loooong time ago I spent a week in March in Hanoi. I stayed in the old quarter of the city for the most part, but it was very lovely. I shared a room with a friend, and the cost of it was, at the time, roughly around $12 USD/£9 a night. Food was quite inexpensive as well, and quite delicious. got to see Ho Chi Minh in a glass coffin, and went on a tour to a couple of museums which were pretty interesting. There was a profusion of Tin Tin paraphernalia for sale in the local shops.