After a 17-hour long flight, our whole family was very tired. We had trouble to get the key and check in. However, the host irresponsibly did not respond to our request. After more than 2 hours of waiting, we still could not get the assistance from the host. Finally, the host asked us to seek official assistance from Airbnb. This is an experience we've never had and we are very frustrated. Later, we changed to other hotels in Paris, which were not only difficult to book, but also very expensive at this moment. Airbnb officials later assisted with refunds. I hope that the mood to travel in France for the next 10 days will not be affected by this unpleasant experience.