We stayed at Yannick's place for 10 days over Christmas and New Year, and it was awesome.
Yannick has a perfect setup for a couple, centrally located in Saint Roch (Uber worked to / from airport), a hip little spot with great bars and restaurants in walking distance (tips: check out Deux 22; make sure you go 'upstairs' to Rue Saint Jean and visit Le Sacrilège; the marche just down the street has all the things you'd need).
Check-in / out was super easy and Yannick did a great job emailing to make sure things were good to go.
Highly recommended, thanks, Yannick!!
PS-
Somewhat related: We like to wing things, but found that didn't work so well in Quebec--if you're going dogsledding, snowmobiling or anything similar, check availability ahead of time.