what are the reasons you did not like Vietnam?
As travelers we were treated very poorly throughout the Vietnam. Didn't seem like they care much of having a tourist industry. When cycle touring we always say we eat our way through a country as we expend so many calories and eat so much. However the food was most often so bad that we choose to go hungry a lot of the time or just try and make our own meals (Even when trying not to get it more often then not meals would come with a lot of animal innards and oil). We felt like many residents had a lot of disdain towards whites or possibly what they perceived as "Americans" fyi we are Canadians but that didn't seem to matter. Very few people seemed willing to help when asked a question and would just shoo us away. Every other SE Asia country we visited was quite the opposite to this.
We have toured through a lot of SE Asia and absolutely loved the Philippines, Indonesia, Malaysia, Thailand and Cambodia. Vietnam however was a very different story. All they travelers we met there conveyed similar experiences as we had.