Karen could have provided clearer communication when it came to check in times. Prior to my flight, she told me to check in at any time. That there was flexibility to my check-in. On the date fo the flight, she assumed I would arrive at Check-In at the same time as my flight, which was incorrect. As I was enjoying my time in Berlin, I arrived the apartment at 7 pm, a reasonable time for check in from my experience at most AirBnB. Her communication was passive aggressive and uncalled for, saying she waited for me for a prolonged period of time. She should have told me, prior to my arrival to a new country with any Cellular data, that she would prefer check in at a certain time, and I would have gladly been able to come in.