Safety in Nha Trang
Nha Trang generally has a low crime rate, though the risk of petty crime especially late at night is high compared to most other places in Asia. The most common crime is pick pocketing after midnight near the Sailing Club. During the day, it is relatively safe though bag snatching on the beach is no uncommon, so don't take any valuables to the beach. Staying cautious at all times is best. Do not wear too much jewellery, and keep an eye on your belongings. It would be smart to travel in groups when you are out roaming the streets at night. Also, people coming home from the clubs should take a taxi and not a motorbike taxi. Single males walking back to their hotels in the early hours from clubs and bars such as the Sailing Club and Why Not Bar, especially if a little drunk, should beware of ladies approaching, typically in twos or threes, but often with a couple of guys on motorbikes watching closely from a distance ready to be get-away drivers or to get involved if things get nasty. They come over all friendly and touchy-feely, first checking to see what valuables you have and where, then relieve you of them. Often the victim doesn't even know he's been robbed until he gets back to his room or after he wakes up. This is almost becoming a tourist attraction in the sense you can watch this spectacle almost nightly, perhaps helping out a fellow drunken tourist being robbed. Unbelievably, no police are seen, and no hotel or bar security gets involved.
Do not keep money in your passport. If you want your hotel to lock up your money, they will usually be happy to do so in their hotel safe and have procedures for doing that. Passports are kept separate from other valuables as they need access to these for reporting each day your stay to the government. Better than giving the passport to the hotel is handing over a photocopy (personal data page and visa). It is never a good idea to give your passport to anyone other than officials. Never store money in your passport. Keep some money in a different pocket to your wallet/money belt. No point in displaying it when paying for small purchases.
Drive-by motorcycle theft is fairly common in Nha Trang. Banknotes and wallets have been snatched from tourists' hands.
If hiring a motorbike, check what coverage your insurance company gives for riding motorbikes in Asia, and it is frequently none.
Do not argue with locals who try to hustle money from you. This includes tourist touts, moto taxis, etc. They can become violent and aggressive easily, often resorting to the use of rocks or even concealed weapons. Although they can be a bit harder to get rid of than in other places, it is best to avoid these people altogether.
There was one negative report about TM Brothers buses. It's claimed, that they have a bad reputation, and some of the seats are broken and you can find cockroaches on the bus. However, their buses are usually a few dollars cheaper than other companies.