I finally got around to trying Mandy's and I was beyond impressed. My salad was AMAZING. It is also located on one of Montreal's nicest streets - rue Crescent. The interior was very nice and clean. There's also an option to eat outside when the weather permits. Another cool thing was that they sell a lot of other stuff on the side such as: juice, desserts, and even their super cute salad bowls!
Although I enjoyed my salad, it was very pricey. I opted for the "create your own salad" option and it got quite expensive. Fortunately, the size was very reasonable and as mentioned before, it tasted good. Another thing was that the seating arrangement was kind of awkward. There are a few big tables and everyone has to try to squeeze in. It can get loud around rush hour so having that many people in one area just results in all of the conversations overlapping.
Overall, my only complaints are that it can get pricey, and the seating-related issues. Other than that, food's great, service was good, and I loved the atmosphere. I would 100% recommend Mandy's if you're looking for some really good salad!
Side note - for those who don't feel like dining in, they deliver!