In general, the Air BnB was a nice place in Madrid to stay. We should pay 15€ in cash directly at check-in as a fee for the late check in. This seemed a bit strange to us, as there was nothing on the page about it. The fuse fell out a few times, for example when we cooked and had the heating on at the same time. Apart from that, the apartment was nicely furnished and clean. Also the location is good and the next metro station is only a 2 minutes walk away.