This is a nice place. The location's fantastic, particularly for Concordia and McGill, but it's close to the Gare Centrale, Mont Royal, the Museum of Fine Arts, etc. Lots within walking/métro distance.
There are some minor features of the flat that I found a little irritating: several odd things were missing (a kettle, tea towels, washing up sponge, bath mat, hooks for towels, toilet roll holder). None of these are hugely problematic, but just a heads up.
Working here would probably be difficult: no desk, and the wifi struggled somewhat with FaceTime.
Others have mentioned the uncovered light fittings and the shower leaking onto the floor, again not too problematic but a bit odd.
On the whole, it's a good place and great value for money. None of the things I've raised had a significant negative impact on my trip. I'd definitely consider staying here again, but I'd look around at other places first.