My initial comment only said that, in our experience, it's a bad idea to use physical key-exchange system for short-term visits of a physical space. Key copies

My initial comment only said that, in our experience, it's a bad idea to use physical key-exchange system for short-term visits of a physical space. Key copies & key returns being two examples of problematic cases. I only brought up key returns in my initial comment because that's the one that caused the most headaches at Sonder. Most people, it turns out, are honest but also forgetful :) The key-copy potentially exposes you to a lot more liability though...