Guillaume and Jesus place is the perfect location if you want to walk through Madrid. Although it is located on a busy street an neighborhood it is super quiet inside the apartment and you have no noise from the street.
It is super spacious and versatile and we felt immediately at home. And if you don’t want to cook and get home really tired of walking around :) you can just go down and choose one of the many places and bring back your meal.
We were a family of 5 and it was just perfect for us.