If you're just looking for a place to stay while you explore the city, note that this unit is over-priced for a studio in Montreal. That being said, this Airbnb is a great option if any of the following apply to you: you will be spending substantial time at the Airbnb (e.g., working from home), you prefer to stay at a relatively new building and in a unit that is very clean, or you see yourself making good use of the amenities (gym, pool, hot tub).
The unit is exactly as depicted in the photos, the bed is very comfortable, and the AC is a blessing during the summer. Again, if you will be spending substantial time at the Airbnb, will make good use of the amenities, and don't want to worry about inaccuracies in what is being advertised, I would recommend this Airbnb.