From the Laurentians:

Take Autoroute 15 South to Autoroute 40 West and bear left to continue on Autoroute 15 South
Take Autoroute 720 East (Ville-Marie Express way), towards downtown
Exit at St-Jacques/University/de la Montagne exit
Bear left at the fork, take right at the exit to the tunnel.
Turn left at the lights (St-Jacques) continue to Mansfield Street, place Bonavenrture will be on your left.

From the South Shore:

Take 10 West to the Champlain bridge.
Take Autoroute Bonaventure exit.
Autoroute Bonaventure becomes University St.
Place Bonaventure is on your left between St-Antoine and De la Gauchetière.

Parking:

Several parking lots are located in the block formed by University St. (east), De La Gauchetière (north), Mansfiled (west) and St-Antoine (south).