We are a family of four (children age 14 and 11), and we decided to stay at Felix's place on our first trip to Quebec. We stayed in April of 2017.
First, Felix is a really great host. He is extremely responsive, very helpful with suggestions and recommendations, and he is a really friendly person.
His place is exactly as advertised: clean, modern, and comfortable. There are two separate rooms, each with their own bathroom, and they both have very comfortable beds. The apartment is in a residential neighborhood near a couple other interesting neighborhoods with lots of restaurant choices.
The kitchen is small but adequate. We did not use it because of all the great dining choices in the city.
It's a short drive to the tourist areas of old Quebec. There are numerous parking garages so it was easy and convenient. Parking on the street almost always has a meter so garage parking is easier. It was really convenient that Felix offered private off street parking.
In short, we highly recommend Felix's place.