We had a really good time in Quebec. The apartment location is excellent; the neighbourhood is good, very close to the old Quebec.
The apartment was very clean, and it was easy and fast to communicate with the host. He was very attentive. We were three people, and the space was enough for us. But, It has a skylight on the living room ceiling that makes the sofa bed guest wake up when the light comes. It's nice, though, because the apartment is very light even though there's no view from the window.
The only issue I had to point out is that the building is very old, and you can see cracks on the walls, slopes on the grounds, and no doors closes, even the bathroom door.
However, I would definitely recommend it :)