This stay reminded me of the early days of Airbnb - an incredibly welcoming host, a charming and well thought out space, and stay that was fantastic value.
The apartment itself is very pleasant - it has lots of nice little touches (built in Bluetooth, convenient storage spaces, and even a yoga mat!). It was very conveniently situated - you can walk pretty much anywhere you want to go.
The host was also fantastic - excellent local knowledge, and very eager and willing to help. He went above and beyond expectations during the stay!
I hope to come and stay in the apartment again, next time I am in Madrid.