Go to the night bar, like Rooftop bar at Pacific Place, 83B Ly Thuong Kiet street or Lacasa Bar at 23m Hai Ba Trung Street or go to Hang Buom Street (Dragon Fly, Temple,...). One special character in Hanoi is food. There are many delicious foods, such as: Pho, Nem (spring roll), caramen, Chè,... Thank you for reading! If you have questions, please ask me
Furthermore, Hanoi has many lakes: Hoan Kiem Lake (Sword Lake), West Lake,...I think enjoying a coffee by Sword Lake is peaceful. If you get up early, you can see that many people do morning exercises and tai-chi around the Sword Lake. Or enjoy the sunset at the West Lake, eating some special food in West Lake, like "Banh Tom" (Shrimp cakes).