We enjoyed our stay in Madrid. David & Cheyenne were great and flexible hosts, providing good recommendations and allowing us to check-in / check-out flexibly. Great communication and easy in/out processes. The apartment is small and somewhat subterranean as others have noted. There isn't any natural light but that means you sleep so well! The space is spotless and they've done a good job of using the small space well. The neighborhood is great for easy metro access, lots of groceries / markets and cafes. Excellent value.