Antoine's place is excellently located. It's so convenient to walk across the street and end up at the metro station on the orange line. It is also stylish and has a well-equipped kitchen and comfortable beds. We had an overall good stay, but there were a few things I should mention:
1) Noise: The insulation between units is pretty thin and there was a fair bit of noise from neighbouring units (loud music and party from downstairs, loud vibration from chairs moving across the floor). You could hear people in the unit below speaking through an air shaft by the bathroom and I'm sure they heard us walking around. The heater units also seem to make a ticking sound that woke us up.
2) Lock malfunction: On our second night, we'd decided to take the 55 bus home instead of the subway and got lost along the busy highway (tip: definitely stick to the subway!). It was late when we got home and the front door code wouldn't unlock the door. To Antoine's credit, he texted back right away to let us know that we could get in the back door (thank goodness!), but it was alarming not to be able to get in. He said he would look into this after we left, so it may not be an issue in future.
3) Exterior stairs: One of my friends was scared of heights and nervous going up and down the external winding staircase to enter the unit. I thought it was fine as long as you are careful.
Overall, we had a good stay because of the apartment's convenient location and comfortable interior. It was excellent value and very spacious. Antoine saved the day by being responsive, but a caution about noise for light, early sleepers.