I visited with some colleagues for a week long business trip. The place was nice and clean, well furnished and a nice location ~20 minutes walk from McGill. Before booking I found the photos a little ambiguous but I can confirm there are three spacious bedrooms with queen sized beds. Checkin was entirely via keycodes and so was very easy. Overall it was very good value.
The communication was a bit intense. I was asked several times to confirm how many of us were staying, and if anyone would visit even if they weren't staying. I had to write to confirm that we'd all read the house rules, which were extensive, and included an in depth list of fines for various infractions (e.g. $120 fine for an unauthorized visitor even if they didn't stay). While I don't think any of this is that unreasonable, it's pretty atypical compared to other AirBnB's I've stayed at, including in Montreal.