I arrived into Madrid at 10pm from London and had a connection to Los Angeles the following day at noon. Was it worth going to the airport Hilton or into central Madrid? With a 24-hour lounge featuring a sleeping area, I deemed a hotel was not worth the hassle or expense.
Iberia has several lounges in its Madrid airport hub. The Velázquez lounge is the non-Schengen (international) lounge located in Terminal 4S. It is a massive lounge featuring a sit-down dining room, several buffet and drink stations, conference rooms, a business center, showers, and the aforementioned sleeping room.
It was to that sleeping room that I headed.
The room is always kept dark, though there are lamps beside each daybed. I counted nine beds in the room.
A note on crowds: by 1am (I got up to eat an apple and drink some water) I was the only passenger in the entire lounge. The lounge is quiet at night and I was able to sleep quite well until about 7am. It certainly helped not to have snoring passengers around me!
A lounge agent came in to check on me and offered me a blanket and pillow. I appreciated that kind gesture.
While not the private rooms offered in the first class lounges of SWISS, Lufthansa, Qatar, or Malaysia, the sleeping room in Iberia’s Velázquez lounge is quite adequate for an overnight nap.