I couldn't have asked for a better host! Elsa and her husband were super sweet and they gave me all the answers to my questions about Madrid! I was able to have productive 2 days thanks to them! The room was spacey and clean. The residence was less than 10 mins away from the airport T1 which was around 6 euros on uber. Everything was perfect and I'd definitely come back when I'm in Madrid/recommend it to my friends.