My family and I stayed at Barbar's place for around 2 months in July and August and we just loved it!
The location, while not directly in downtown, is so accessible and convenient. With the nearby Frontenac metro station you can get to downtown in less than 15 minutes. We also enjoyed riding the bixi bikes around the city with 2 stations just a couple of minutes walk from the apartment. Around the area there is everything you need from restaurants to cafes and lots of parks around. There is even a really nice public library just next to the metro station and a large sports facility (Centre JEan-claude-malepart) where you can get a gym subscription for just $25 per month.
As for the apartment, Barbara has equipped with everything that we needed. The only equipment I got myself was an espresso machine as I am not a fan of American coffee. My wife fell in love with the huge kitchen which got us spoiled as now all other kitchens look small.
This was our first time in Montreal and Barbar's apartment and hospitality helped a lot in welcoming us to this beautiful city!