We had to leave the train twice, once at around 22.
Bedding is provided by the operator, so may be branded and maybe a bit better than the regular bedding in the DSVN cars.
Book at least 7-10 days before travel to allow them to turn around your booking.
The following morning we were treated to some beautiful mountain views and the sight of Chinese workers harvesting the bamboo by the side of the tracks.
Fortunately we were able to buy our domestic tickets at the international counter 16, also labelled in English for 197 RMB per person in a hard sleeper.
Of course, at the luxury end of the scale we have Hanoi's most venerable and upmarket hotel, the luxurious and expensive , which comes complete with outdoor swimming pool and lido bar.
Note that this shows the earlier wood-panelled incarnation of the Orient Express, before the introduction of the new standard sleeping-cars across all private operators as well as Vietnamese Railways themselves.