It's very clearly stated that she's run the bar for about 1000 years.
When Finn asks where Han's brought them, he explains that Maz has been running this cantina for a thousand years. The exact quote (from the novelization) doesn't leave much room for interpretation:
“The galaxy’s full of watering holes, but nothing like this place. It’s been run by an old smuggler named Maz Kanata for a thousand years.
Unfortunately, the second source you quoted seems to contradict this:
"Her history is that she was a pirate for a long time. She's lived over a thousand years. She's had this watering hole for about a century, and it's like another bar that you'd find in a corner of the Star Wars universe."
That quote comes from an Entertainment Weekly interview with Abrams prior to the release of the movie. Abrams may have misspoke, or the script may have changed in the interim, but the evidence in the final movie has to take precedence over anything else.