Our group had a great stay at Antoine's place! It is exactly as advertised with lots of sleeping and living space so definitely great for a group. The basement living space ('the rave cave') was our favourite place to hangout!
When we arrived the check-in process was extremely easy and communication with the host was always quick! The place was super clean when we arrived and was stocked with all the essentials (soap, toilet paper, sheets, towels, etc). The location was great! Would definitely recommend this place for your trip to Montreal!