Our stay at Opal Hotel was wonderful! It's a great central location for both walking and metro (2 blocks from the nearest stops). Lots of nightlife and restaurants nearby, and only about a 20 minute walk to the Old Port area and downtown closer to McGill University.
This room is on the 3rd floor with no elevator, but the plus there is that it's further from the street noise. We didn't find it too loud to sleep at all, though we couldn't leave the windows open overnight, but there is AC that works well. All the photos are accurate - the room was clean and comfortable. The little Nespresso machine worked well, and there's a little mini fridge and kitchenette. The bed and pillows were comfortable and the shower was good with good water pressure.
Communication with our host was great - response time was fast, and we were even able to extend our stay for one more night in another room in the building (this room was already booked) with somewhere to store our bags between check-out and check-in to the new room. I would absolutely recommend staying here or with another Kasba property.