This has to be the best place to stay in Madrid. If it's available book it! It's so close to absolutely everything and the plaza it looks over is constant entertainment. I was there on my own but it would comfortably accommodate two couples, as whilst there is only one full bathroom (off the bedroom up stairs) you'd only need to share for showers as there is a downstairs toilet. This apartment is exactly the same as the photos and truly made my stay in Madrid special!