The number of Airbnb bookings was measured in the month of Oct, Nov, and Dec of 2018 as well as 2019. This percentage difference of 2018-19 was used to predict the number of bookings if there was no impact of the COVID pandemic in the cities.
It was observed that Seoul, as well as Milan, experienced a fall of about 25% bookings in 2020 Feb, and Taipei suffered from a 42% drop. On the other hand, Berlin had a normal Airbnb booking rate because people still traveled, and this was a good indicator of the surge of covid19 confirmed cases in March.