Nguyễn Thái Bình runs through the old banking quarter of District 1, a few blocks back from Bến Thành Market. It is the name on the hotel bookings around here, and it is what people type when they are looking for the area rather than the landmark.
The quarter empties in the evening, because most of the buildings around it are offices and banks rather than bars. That is why the street is quiet after seven and busy at eleven in the morning.