This place has alot of history. It was originally called 'Ma Hellers' so people started calling is Ma's for short. Then in a misguided efffort to make it Hip, it was switched to Maz. Not sure how old it is but I do know it was open when the boys came back from WW2 and it did well serving steaks and featured live music. On my last visit home I took a friend from St. Louis with me and I described it to him as a Dive Bar. He then corrected me to say it wasn't a Dive Bar but rather a 'Joint', I believe he was right.
This place gets 5 stars because it is a landmark and should be preserved so I can go back for a few beers every couple of years.
One piece of advice: The drunks at this place are harmless, BUT they will talk your ear off if you let them.