Cecilia and her flat are both perfect!
The rooms were entirely same as in pictures, clean and nice. When you live in and look at it closely, you'll find some more elaborate ideas for decoration or better functioning.
Cecilia was so nice introducing everything from how to use the keys and lights to showing us the highly recommended French bread shops. The croissant is really tasty. We ate it every morning to start a whole day. I know we were crazy to considering parking a car in Paris Montmartre, but we had no choice as we were late to return it ahead of close time. Thanks for Cecilia, she helped search a parking lot and even volunteered to hold it until we found our way there.
Cecilia cares about guests' experiences very much. That made the 'Montmartre 2 large rooms' a best choice in Paris. Actually I want to book another 2 or 3 nights after returning from south France, but the whole month had been reserved. So I highly recommend it and don't hesitate if you feel interested in it.
P.S. There's a tasty Chinese restaurant just across the street, typical Chinese flavor and good price. That might be an added value if you are a gourmet.