From the outset communication with Juan was 5* - very quick in responding and helped us out as much as he could every time. Check-in was very easy. As it happened it was a 40 oC day when we checked in so carrying our luggage up about 100 steps wasn't the best but once we were in the apartment was bright, clean and modern. I believe the bed is actually a Queen size (not King) but was still comfortable. Air conditioners were a blessing in the Spanish summer! The location was fantastic - really close to heaps of places and stations but out of the way enough to be peaceful and quiet. We would recommend this listing to anyone visiting Madrid.