Location was excellent for getting to old Quebec. Maybe a 10-15 min walk from the apartment. The apartment was clean and comfortable. The kitchen and bathroom were a little dated, but everything was functional.
As some others mentioned, the apartment was up 3 flights of steep and narrow stairs. It was winter, so we did not use the outside stairs, but even the inside stairs could be a little rough if you have knee pain etc. I have some mild knee pain that comes and goes and we did lots of walking and multiple trips back to the room, so I did feel it in my knee sometimes, but it was okay with holding the railing and taking it slow when I needed to.
The only other issues I had is that the pillows were too thick and too firm for for me. I had trouble sleeping the first night and wound up sleeping on my coat as a pillow. You can also hear the street noise from the room, so bring ear plugs if you are a light sleeper.
Overall, I recommend this place and the free parking was a huge bonus!