I'm doing a report for school on Hanoi, Vietnam and cannot find any of this info. Please do not tell me to do a different city, this was chosen for me, I have no other options.
You would be really pushing it for time within the 5 days i would not say it was at all feasible . The only way it would be possible would be to fly to both Phnom Penn , & Vientiane then other problems arise cost being one of them . The connecting flights for this journey would be far to restricting for it to be enjoyable . I have done this journey several times but overland and i have had the luxury of time on my side . Unless you can extend your stay considerably just enjoy the pleasures of Vietnam . Even 5 days in Vietnam is a really short sojourn for the many places you will want to see .