Jesus and Sara were delightful hosts. Communication was constant. Entering with the app ended up being easy, but took some time for me to figure out. We are a family of five (16, 13, 9) and were reluctant to stay on the opposite side of Parque Retiro. However, we walked through the park everyday on the way to and back from the sites we wanted to see. It ended up being one of our best memories of Madrid as we didn't go to Retiro just to check the box, it was part of our daily experience, just like a Madridleño. Also, there are so many top end tapas bars and restaurants down the block or a few blocks away. We were blown away and felt spoiled. I highly recommend this apartment and its location. We'll be back!