As the Americans sailed off, Flora's fame spread. "The officers left her telephone number on every toilet in the South Pacific. And the phone never stopped ringing."
As legend has it, a prime minister and a bishop were among Flora's clientele. And Great Train Robber Ronnie Biggs allegedly hid out at the brothel after escaping by ship from Australia in 1970, although Biggs later told New Zealand Herald columnist Peter Calder he came ashore only long enough for a beer.
Ring Terrace is a short street and in recent years it has been home to businesswoman Jan Trotman and her politician partner, Winston Peters, fashion designer Helen Cherry, property tycoon Pat Rippin and troubled socialite Lynne Carter.
Farnell says Flora became part-Chicago gangster, part-raconteur. She was so likeable, so bubbly, so smart, she sometimes won over police tasked with taking her out.
"She'd hold court and you'd go around there and the Vice Squad would be there."
MacKenzie's only business rival was a Mt Eden madam called Joan Dann. "They used to have turf wars. They were sort of like Chicago gangsters. [But Joan] didn't have the finesse that Flora had."
Thirty years after her death, Flora's exploits are honoured in ex-hooker Rachel Francis' new book, Naked Truth. Francis says Flora was a courageous woman, risking the wrath of the law and postwar society to do what she loved.
"She was born with a silver spoon in her mouth. She could've chosen any profession she wanted. She could have said, 'This is too hard, I'll go back to sewing'. Yet she chose to be arrested not once, but twice, and still carry on what she was doing."