Only have 10 days off - is Vietnam a good idea?

Have PTO Aug 12-22, but am based in San Francisco so flight times are like 18-19 hours sometimes more. Wanted to see if it was worth trying Vietnam (I’m viet and have never been) or if I should do another country and save Vietnam for a longer PTO.

Anyone do Vietnam in the same about of time? My mother is from Da Nang so that is pretty important for me to see.

Any other countries in Asia to recommend?