On this page there’s 6 highlights (view in Baymard Premium) outlining what Booking.com are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 762 autocomplete suggestions examples.)

The screenshot was taken on December 29, 2021 and depicts Booking.com’s Autocomplete Suggestions. In total, we’ve reviewed 35 of Booking.com’s page designs. To see them all, visit the full Booking.com UX case study.