Great base of operations for main Madrid sights for a couple. The host was very helpful and the listing is accurate - it is cozy but comfortable with cool balcony views of Madrid rooftops.
Kitchen area is well equipped (including a convenient Nespresso machine) but very small - it was fine for making breakfast but anything slightly complicated would be problematic. The unit is on a very lively pedestrian street. Since it is on the top floor it is does not get too much street noise, which can be blocked out by the A/C. The building elevator is surprisingly fast and roomy, but you have to go up one flight of stairs to get to flat.