Timeless, comfortable, and convenient, the sleeper train is the perfect way to travel between Hanoi and Sapa—although do note that trains terminate in Lao Cai, an hour’s drive from Sapa. Book a comfortable soft bed in a shared 4-berth cabin online, either Hanoi–Lao Cai or Lao Cai–Hanoi, with this convenient ticketing service: You’ll need to be at the station an hour before the train departs to reconfirm tickets.