Google shows address as -
HCMC Office: 9th Floor, Hai Au Building
39B Truong Son St., Tan Binh Dist., HCMC
Tel: +84 8 3547 1866 / Fax: +84 8 3547 1865
-HOWEVER- I believe they have moved to the Parkson Shopping Center which is a multi story shopping Center that you can see from the International Terminal-only about a 3-5 minute walk. Bar 5 in District 1 is a haunt for pilots in the evening or somewhere close by.
You appear to have more money than common sense