The apartment matches the photos. Nothing fancy, but it has a lot of light and is very clean with good-sized bedrooms. (An additional couch or easy chair would be ideal). The location is great (right around the corner from a metro stop, and a 5-minute walk to the outstanding Mamie Clafoutis bakery). The neighborhood is very pretty and there are some great restaurants about 10-15 minutes away (on foot).
The check-in time is on the later side (5pm) which looks to be normal in the area (other listings had check-in at 4pm). If available, you can check in earlier but it costs more which feels a little icky. It looks like the listing is one of a group of investment properties (nothing wrong with that, but the experience was lacking a personal touch). It might feel a little more welcoming if the host(s) provided material about Montreal, and/or recommendations for places in the area. Overall, a very smooth experience, just not particularly warm if that's your thing.