I would recommend Guillaume's place to anyone! The location is absolutely spot on for fun night life, amazing restaurants, and great shopping. You will be walking distance to most of the historical sites in Madrid, but also located in an area that isn't loud. Guillaume took my reservation last minute and honestly, the communication was absolutely perfect to get me and my family in and out! The home is very large for a typical European apartment. Keep in mind that there is not an elevator to help bring your luggage up and down the stairs, but Guillaume helped as much as he could!
Thank you so much for such a great stay!