I met the host at the apartment at 12:30pm, she showed me the apartment and gave me 2 keys, one for the apartment and the other for the downstairs door which let you into the building. We both left, I had meetings all day. When I returned at 9:30pm, the key, that was given to me, to the downstairs door to get into building did not work. Therefore I was never able to access the apartment, fortunately I did not leave any personal belonging in the apartment when she showed it to me. I sent a message from downstairs at 9:30pm that night but still today 3 days later I have not gotten a response. Their keys were returned the next day by a friend of mine.