I decided to go from Saigon to Phnom Penh (Cambodia) through the Mekong Delta. It was interesting to see the houses and businesses on the rivers. After two days we reached Cambodian border.
Three weeks in Vietnam were very hectic for me. The cities were crowded and filled with motorbikes. The people were harassing the tourists most of the time. It would probably have been a better experience if I had visited more of the Vietnamese country side.