Day drank here while in town for the jazz fest.
Not much more I can add that hasn't been said already: the beer (of course), chill vibe, and now an outdoor patio that is the perfect place to spend a summer afternoon people watching. There's a small menu of food they can make behind the bar, so I'd suggest eating a bigger meal elsewhere. Free wifi. Service is typical Montreal. Their website describes the rosee d'hibiscus beer as "the perfect thirst quencher on a hot summer day." I concur.
Dieu du Ciel really is what all brewpubs should aspire to. It's always one of my favorite stops on any trip to MTL.