We missed the burlesque show (gotta get here early!) on Saturday night. According to the bouncer, it's 3 sets of performances, each 5 minutes long.
But we came back on Sunday night before dinnertime and got to experience drinking in a fairly empty speakeasy below ground. I had their Negroni #2, which is made with peach liqueur, gin, vermouth rogue, and Aperol (which is less bitter than Campari). The cocktail was strong with only a subtle drop of sweetness from the peach liqueur. I didn't feel like I was drinking sugar and it did not mask the liquor aka my PERFECT drink! I got to keep the playing card that came with the glass as a souvenir. If you're a tourist in Montreal, GET this drink!
My favorite part is probably the entrance. I love speakeasies because of their hidden entrances, relaxed atmosphere, and creative drinks. Le 4e Mur (which means "the 4th wall" in French) has a hidden brick wall entrance located behind a detective agency door front. Find the brick to open the wall and reveal the staircase to the bar!
To top it off, the bartenders were very accommodating and willing to split the check so everyone in our group could pay by credit card. That was very kind of them!