Christian's apartment is great. The layout and space look a little odd from the pictures, but it's actually quite charming. The red futon room (with an opaque skylight ceiling) was a great pull out bed option, so our kids got to separate - one there and one in the loft. The only windows are on the one wall in the living room and look out onto a small, unappealing interior but outdoor walkway. You can't get much fresh airflow through the apartment really but the red futon room and the bedroom have air conditioning. It's amazing how quiet the apartment is despite being in a superb left bank neighborhood. You're right in the middle of streets of activity and you can't hear it! Very close to metro stops. Christian was a great communicator with directions and instructions. Would definitely recommend if you want to be steps away from great restaurants and Notre Dame cathedral!