We had a very good stay in Paris. The location was perfect. It was close to Gard du Nord and close to the Metro. Restaurants, cafes and grocery stores were nearby. A perfect location if you'd like to explore the city. The balcony is lovely too and Guillaume was very friendly. He could not be there when we arrived, but his son was there to welcome us, so that was no problem at all.
The only thing is that it is allowed to smoke in the appartment. So if you are allergic to smoke, this might not be your first choice. Besides that, we can defenitely recommend the place.