On arrival Oliver kindly accommodated an earlier check-in of 2pm and we were met by his representative at the apartment. The apartment was clean and spacious but as other reviews have noted very noisy. It’s quite near a hub of emergency services and there are sirens going off almost constantly. One of the two electronic keys to the apartment was demonstrated to ensure we knew how it worked. We were at the apartment for a total of four hours before going out for our evening and we took one key with us. On our return at midnight the key didn’t work and no one answered the host phone all night. I’m sure that the key not working (it had a flat battery) was purely bad luck but forwarding a contact number to a representative irresponsible enough to not answer it in an emergency is just unacceptable. We didn’t complete our stay at the apartment and have received a full refund from AirBnB/Host. I’m sure Oliver will work hard to ensure that this circumstance never happens to another guest.