We had a great stay. The location is absolutely unbeatable. You can walk to just about anything in Paris. Great food is close by.
Cons were no curtains, which was a little difficult considering the bathroom location requires you to walk past all the windows to get to the bedroom. It's very small, but still fits 2 comfortably. There is no air conditioning so it was a warm, but there are fans that help and sleeping with the windows open made a huge difference.
Overall I would definitely recommend this place to friends and would stay again.