Both locks to get into the building are finicky and difficult but she will stay to help teach you how to get in. I let the host know almost a week in advance that the only flight I can get means I get there in the evening, and still had to pay in cash, out of the app due to my timing. I understand if the change was last minute, but like I said I was very communicative of my arrival almost a week in advance, and there was no other option for me.