Nha Trang is a beach resort that in no way could be classed as 'real' Vietnam, but it is a fun place to stay for a few days. There is an island a few kilometres off the coast called 'Vinpearl' that has been turned into a huge theme park with water slides, a roller coaster, aquarium and loads of other stuff. It is accessed from the mainland by a cable car that crosses the sea. I spent one of my days there and it was awesome. I spent the rest of my time in Nha Trang doing what you do in beach resorts: lazing on the beach by day and drinking in the bars at night.