Excellent location. Easy to get to from the airport using public transportation. The area is very pedestrian friendly and close to some of the main sights.
Note that this is an attic apartment, so taller people (I'm 6-4) may find it a bit cramped, and older folks should note that you need to walk up 6 flights.
We had a great Parisian experience here and found it very charming and easy. I would definitely return in the future!