Alvaro's apartment is in a lovely historical building. We especially liked the elevator, having never seen anything like it in an Airbnb before. The apartment is very spacious and modern and the Nespresso machine and water in the fridge was much appreciated when we arrived.
The apartment was surprisingly quiet given the location. We stayed on a Thursday night and there were no bars playing loud music etc which might be an issue in other Airbnbs in Madrid.
The check in and out were very easy and great communication with the host.
Would definitely stay again if we were back in Madrid!