If Saigon is known as the party spot in Vietnam with its lively atmosphere, mainly due to its massive population, nearing 10 million folks, Ha Noi is the northern charm. Ha Noi, is probably 2/5 the size of Saigon, with a third of its residents. There's enough room for you to breathe here if you wanted to. Strategically planned (unlike Saigon, which had developed unregulated within the last 25 years), shady trees line every street. Wait, they even have street signs for almost every road; completely unimaginable in Saigon.
Though the weather was warm today, I found riding 15-20 km around the city quite enjoyable.