My family (2 adults a 12 year old and a 10 year old) stayed here as our home base for 10 days as we explored and enjoyed Montreal.
The location could not better for someone who wants to use the Metro (we used it multiple times a day) as it is just steps away. The neighborhood is residential and felt very safe, as well.
The apartment had everything we needed, and was as advertised. If I were to come back again, I'd definitely consider staying here again.
Oh, and Antoine is super responsive. He was available whenever I needed but otherwise left us to ourselves. That's kind of my ideal.