Vincent + his place are amazing! I stayed with Vincent for three nights while visiting Quebec City solo, and it was wonderful! Vincent is warm and friendly, and immediately felt like an old friend. He invited me out swing dancing and even put me on the guest list for a music show he was producing! You couldn't find a better host.
The place is really nice and exactly like pictured! The bed was really comfortable and there was a fan for air circulation, a nice closet, and a dresser! The bathroom was very clean, and the living spaces homey and easy to share!
You'll be about two miles away from the heart of Old Quebec, and some of that is up a steep hill! Prepare to climb if you do walk--I recommend walking up toward the Musee de Beaux-Arts (do visit, it's lovely!) and then walking through the Plains of Abraham or along the Grand Allee (rather than walking through downtown). It's a really lovely walk! If you prefer to take a cab/uber, it's about a 10/15 minute drive for around $12 to the Chateau Frontenac and other attractions.
Definitely stay with Vincent while you're in Quebec!