The apartment was a good size in a good location close to everything and in a nice condition generally. Walkable to Retiro, Prado and close to shops, bars and beautiful squares all around. Air con was good and very cold! Wi-fi also good.
The only downside was the noise from the street which other reviewers mentioned also. With the windows open (which offer lovely street views of Madrid and let in lots of fresh air) it is very loud, with the windows shut it is also quite noisy, especially at night. It is strange as it isn’t even a busy street, just something makes it very very loud. This is not the host’s fault at all - it is just the location!