I was in Central #vietnam in March’19. My trip was 5 days in Danag-Hoi An-Hue. I took a night train from #dannag to #hue which was just 4 hours. You can see beach and ocean view from the train which really nice!! In Hue, just book a day trip (you can choose the vehicle; bus+boat, motorcycle, car) then, you can finish the most famous attractions there!! FYI. The price is quite cheap :) but please prepare for hot weather.