voila comment marche les modifications de réservation longue durée :
https://www.airbnb.fr/help/article/1361/comment-les-modifications-et-les-annulations-fonctionnentell...
Etiez-vous dans ce cas-ci?
"La modification est faite automatiquement si :
- Le séjour a commencé, mais la modification survient plus de 30 jours avant la date de départ."
C'est pour cela que j'ai ajouter dans le réglement intérieur de l'annonce :
"For long term lease (30 days and longer), a contract will be signed. Worker and student lease is commited to respect the French Law which requires the tenant to rent for a minimum of 1 month in Paris. If the guest books for 1 month or longer and then wants to stay for less time, the approval of the Landlord must have been obtained. The landlord may refuse to shorten the rental period because the rental would become illegal. Therefore, the tenant would be obliged to cancel the reservation on his behalf."