Some updates:
* we will be at a different venue (only on Friday), but are still working out where exactly
* Motel One is definitely in the evacuation zone from 9am until (expected) 2pm. However, they are also unable to clean the rooms, so any new rooms on Friday will be only available from (expected) 6pm onwards.
* Public transport at and around central station will come to a complete halt, with implications on public transport + traffic across downtown Berlin