Great value for money. Of course expect slight stuffiness, as the room is in a semi-basement, but you can manage it with the AC and by opening the window. Rooms in Madrid are pricey so I cannot complain as everything else was great: the street is really quiet, the area is residential and quite posh, the furnishings and the bed linen/towels are nice, the communication and the checkin/out process were smooth. Those complaining could of course get the same quality on a higher floor somewhere else but they would need to pay double.