This is a great place! I was their first guest and Maria was extremely welcoming and kind. She welcomed us to the apartment and gave us a quick tour, and was very flexible about check-in and check-out times. The apartment itself is great! Very tidy kitchen with laundry machine, nice sofa + TV, nice shower, comfy bed.... It's in an amazing location and we were able to walk everywhere we wanted to go in Madrid, including the Prado and the Palacio Real. Highly recommend!