Montréal bound

After a little last minute planning, we've decided to go up to Montréal for the holiday weekend! I'm excited, I've never been before, and the weather forecast looks great! The above picture is from the Marché Jean-Talon, which I've been staring googly-eyed at for the past few days (I've felt slightly market deprived since our trip to Quebec last summer). We'll be staying at a B&B in the Plateau area. I can't wait to explore. Do you guys have any tips for must-see sights? Shopping? Eating? I have a feeling I could easily spend a whole week there, but 4 days will have to do.