Antonio was a great host! After meeting me at a clearly-marked place and time he walked me over to the apartment. He gave me a very clear explanation of how things worked (wifi, towel warmer, washing machine, etc.). He was extremely attentive and sent a couple of messages over the course of the week just to see if I was doing alright. The apartment itself is great for business or leisure (or both), especially for the casco histórico. The Archive of the Indies is a three-to-four minute walk away.