Ho Chi Minh City
Really cool city. Quite full on but very cool. I've spent a month here. This is my first time in Asia so I don't have much comparison but I've had a blast. The locals are very friendly. There's a big expat scene. I felt a bit of culture shock at first. If this is your first taste of asia you may too. The roads are crazy. It can be smelly and load, there's lots of pollution. But after a few days of adjusting it just adds to the charm.
Insider Tip:Get safety tips from locals/hostel staff. There is some bag snatching and pickpocketing. Also check online what your taxi should cost from the airport as lots of people get ripped off this way. Taxi from airport to backpacker area should cost around £10. I met someone who got charged $40. Vinasun and MaiLinh are cheap reliable taxi firms. But don't let these 'warnings' put you off. It's a cool city, just be careful. Avoid carrying a purse late at night, and if you do keep it on your front under your hand.