If you research "Vietnam Travel Warnings" you find that you should NEVER drink water or ice in Vietnam as hygeine is poor also they have many desease's the west doesn't {like bird flu many cases} so you need vaccinations. Tourists are targeted by thieves so it is recommended to check which areas are safe. There are other issues to consider if going to Vietnam.
sounds like you're an experienced traveller to VN, eh? It's true you shouldn't drink fresh water there, nor anywhere in the Orient apart from Singapore, but it's perfectly natural to buy bottled water - we do that in Sydney too. Yes, you need vaccinations - so what?
As far as "targetted by thieves" - well, give us a break! - how many muggings in Sydney these days? My daughter was mugged on a city station at 3 in the afternoon.
I repeat, from my many trips, I've found it very safe in VN.
Now if you mentioned another SE Asian country, that would be different. Mrs Ozzie and I have been accosted by terrorists wielding their AK-47s in another place but still I wouldn't keep away.
However VN we've have found a delight to visit. Actually I have permanent accommodation there.
So, Renee, you need not fear going there.
You could come down to Sydney on the way back!!