Yann place was great. We loved the location. Its not mid center, but provides a close voyage to different locations in the city.
The Apt. is Paris sized. Nicely furbished and good amenities. The bed is a open up Couch. it is a little crooked. I assume all Paris apartments are like this, but walls are a bit thin and there is some noise in the morning, as the Floor (NOT THE APT) has a shared bathroom right outside the door.
Still, good stay and good place to be in Paris.