Is a 2-night hotel booking sufficient for my DTV application in Hanoi?

The requirement for proof of accommodation in relation to the DTV visa application doesn't necessitate a long-term booking. A 2-night reservation in Hanoi is generally sufficient for starting the process, as confirmed by several commenters who successfully submitted similar arrangements. However, it's advisable to include a cover letter explaining your plan to extend your stay if necessary. Be prepared for the possibility that authorities might request additional proof of accommodation later, which could delay your application.