Jan i would suggest a visit outside of the summer time where the heat is boiling at 35C
other than that my fav time is fall or late winter (jan-april).
I had so little time in town to go deeper into specific areas like Trung (kiemchacsu) and i think his photos are better in describing the local daily life but will continue to share some more shots.
Trung we should definitely hang out next year when i'm in hanoi and if you happen be there. I'm passionate about the city and definitely want to visit more often. I enjoy your styles and hope to learn from you too!