My wife and I just stayed at The AC Palacio Retiro in Madrid on points October 25th for 4 nights. The location was great for us, close to Retiro Park and Prado museum..we were able to walk just about everywhere we walked form this location. Although we requested an early check in at this hotel, we arrived from our international flight at 8am and were not able to check in until 11am since the hotel was full. The staff is very accomodating, but the rooms, although clean are not quite up to Marriott standards in the US. THe beds are not totally comfortable. Also, bring your own washcloths, as they are not used in most European hotels. The morning coffee is pretty bad as well, and only a small continental breakfast is available to elites. Anything other than croissant or toast and coffee is pricey. The plus side is a free mini-bar in your room with free beer and water and soda. All in all we were satisfied with this stay.