Ghislain was a great host. We arrived late, so he left us a tasty french breakfast for the next morning.
The apartment is small, but comfy. We could sometimes hear the neighbors making noise on the stairway, but that didn't really bother us as it wasn't happening often.
Location is great, close to Sacré Couer and plenty of restaurants and markets. Three metro stations are also 5 minutes walk away.
Also, Ghislain gave us some great suggestions on where to eat or have a drink nearby.