We had a great stay at the apartment! Highly recommended for everyone who is visiting Madrid for a (long-)weekend :)
The apartments location was great - you are able to walk everywhere within the greater city centre in about 30-45 minutes. Surrounded by lots of nice, traditional restaurants and bars. A little noisy at night but nothing a closed window couldn't handle.
The communication with the host was super easy, we even were able to check in a little earlier.