Hi! I will be arriving in Berlin at 4:20am in the morning in January (from an Amsterdam-Berlin overnight train). Our hotel doesn't take luggage until 7:30, so I'm not sure what we should do. Also,we were thinking to do the 11:00 walking Berlin tour from Brandenburg gate.
Also, just in general, are there any recommendations for 2 days in Berlin (yes, I know it's too short but we have no choice :/)? Should we buy any passes?