GMU Chew Review: 3.5 out of 5 forks Hours of operation 8 a.m. to 10 p.m. Monday through Friday. Jazzman’s is a coffee shop located in the ground floor of the Johnson Center. Jazzman’s offers coffee, tea, bottled drinks, and small snacks. Menu items Hot tea Latte or Cappuccino Regular or decaf Coffee Muffins […]