We had a great stay in Paris. Marie's apartment is one of the nicest I have stayed in. It is cozy, sunny, neat and very tastefully decorated, so we felt extremely comfortable. It reminded me a bit of Airbnb the earlier years when there were less lifeless, commercial vacation rentals. Anyway, check-in/out at Marie's is very straightforward and flexible in terms of time. We also liked the location near the train stations (metro and international trains) and that it's only a few minutes to the canal.
To stay at Marie, I can therefore only warmly recommend to all others. If we are ever in Paris again, we would be happy to stay in her apartment again.