Great apartment and host. Nacho was there to greet me and show me the place. And it is an incredibly modern, clean, artfully furnished and decorated apartment with beautiful views of the Plaza below, the bridge and cathedral to your left (off the balcony).
Located on what seems to be the street to be on at night, lined with restaurants and bars (however, the windows in the apartment keep 100% of the noise out). The place has air conditioning (appreciated in late August when I was there), washing machine, and wifi (I include these here though they are also in the apartment specs because I have found not all places are as advertised). Nacho's place is as advertised, and I still found myself having a better time than expected.
Will definitely look to stay here again next time I am in Sevilla. Highly recommend!