I was never able to get to Adams place because when my train was delayed, he told me I could not get the key anymore until 10am the next morning if I arrived that late. That meant I would have had to wait for hours outside during the night/ early morning by myself.
Adam also ridiculed me for asking for the phone number of the kiosk where he placed the key, because that’s apparently not how Berlin works.
Overall, Adam was very unsupportive and since his proposed solutions (waiting until 10am, later he offered that I only wait until 8:30am but drive across the whole city to pick the key up) all would have had me wait in the dark by myself, I had to find an alternative solution by myself.
I really do not recommend Adam as a host!!