My parents and I had a wonderful stay in Paris. The apartment was just as advertised--clean and spacious. The three of us were very comfortable. Canelle's lovely parents met us at the apartment and even though their English isn't perfect we had no issues communicating. They explained everything well, including the somewhat complicated entry, and even greeted us with a (much welcome!) bottle of wine.
Canelle was easy to reach despite being out of the country.
Only notes are that there is some traipsing through a courtyard and up some stairs in order to reach the apartment--something to consider for someone hauling a lot of luggage. And make sure you take your shoes off and tread lightly in the apartment! It sounds like we were not the first to be visited by the downstairs neighbor to complain about noise, even though we were not loud.
There was also some early morning construction that woke us up, but that isn't any fault of Canelle's.
On the whole it was a fantastic experience and I would recommend wholeheartedly to anyone visiting Paris.
p.s. Do visit Bistrot de la Bonne Cecile on Rue Notre Dame de Nazareth! We loved it so much we ate there twice! And say hi to Gaspard the dog!