Humble Lion is a solidly good cafe, filling a niche in an otherwise rather dreary stretch of Sherbrooke. I'm always surprised that the neighborhood immediately surrounding McGill is so desolate, but whenever I think I'll need to schlep myself east, west, or south a good haul (at least 5 minutes walking! as if!) to find caffeine and hipster-baked-good sustenance, I remember Humble Lion.
The coffee is good, if tending toward sour, and the baked goods are reliably tasty. The ambiance is great if you need a bright place to sit and work, but seating is often in high demand, and be sure to bring headphones - every time I'm here, my attention is averted from whatever I should be doing onto the loud conversations between the baristas and the owner or their coffee-drinking friends. The bathrooms are not friendly for anyone with the slightest mobility impairment (or claustrophobia), but there are power outlets galore, and free wifi. All told, a good (if not quite exceptional) cafe exactly where one needs a good cafe to be.