For all accommodations with the "Serenity Offer" (private advertisement) mention, you will be able to modify or cancel your stay (except 40€ booking fees + cancellation insurance) until the day of your arrival, if a decision emanating from a competent authority of the country and linked to the COVID-19 epidemic would not make it possible to go on holiday: confinement or travel restrictions.
For other accommodations that do not mention this offer (professional advertisements), you remain subject to the usual sales conditions.