Some Booking.com’s accommodations offer free cancellation on all bookings.
A free-of-charge cancellation is available only on rooms tagged with the “free cancellation” mark - you can find it on the hotel’s page directly or you can use search filters.
There might be time limits for a free cancellation so stay vigilant.
Go to your Booking.com account to see the list of your current bookings.
Pick the booking you want to cancel.
Scroll the page down and click on the “Cancel your bookings” button.
The confirmation email will be sent to your email.