The location is perfect. It is an easy five minute or less walk from RER stop when coming from CDG Airport and is steps away from the river, views of Notre Dame, a wide selection of dinner options, and bars with live music. At same time, the small street it sits on is quiet even on a Friday night, so we no had issues at all with noise. A perfect base in the historic center of Paris to explore the city.
The place is small, but perfect for a couple. Well equipped, clean, and true to the pictures. We stayed 4 nights and could easily have stayed 4 more.
One tip -- it is up four spiral floors of stairs. They are charming, but are a little steep and narrow. If traveling with a huge and heavy suitcase...it would be a serious challenge if not fit.
Bottom-line -- a great place in a great location and at a great price. Would certainly stay again.