Rude and obnoxious host. Don't deal with him
I was unable to check in. On booking you get a code for the door. After getting into the lobby and up to the room I tried to enter the apartment with the code. This was at 15:30. The door would not open. I tried any which I could to open it, pushing hard etc for half an hour. My wife tried any way she could to yo no avail.
At 16:10 I tried calling the host and messaging him on the number provided but there was no answer. We are now left in Geneva with no accommodation, which if you've been to Geneva before you would know is quite an issue as hotels fill up long in advance. Fortunately found another Airbnb happy to take us at such short notice.
Augustin finally called (which I missed) and left a WhatsApp at 20:30 after I found somewhere else
As I did not stay there due to no fault on my part I sent a full refund request through Airbnb. I received the refund but only after a rude, childish reply from the host without any explanation of what might have happened.