Him Lam Golf Driving Range

It's like Chelsea Piers in NYC except that there is real grass in the
landing area, and it's cheaper - as much or less than the other ranges
in Vietnam.  90k for 100 balls.

234 Ngo Tat Thanh in Binh Thanh District, on the Saigon River at the base of a bridge/overpass.  Only about a 25k-35k cab ride from District 1.  

The net is about two hundred yards out if you are wondering.