The flat is flawless. I was impressed with the high level of hygiene exercised (the toilet even had sanitation tape!) and how well kitted out the kitchen was. The bedroom is modern and spacious, and I cannot recommend it enough. Communication was quick and easy, and my stay here was generally an enjoyable one. The flat's location is in a prime spot in the city centre, within walking distance of all key sites or a 5 minute walk to the metro station. My only criticism is that Madrid feels a little bit seedy, but that is nothing to do with the flat but is a broader issue with the city itself. A 5 star property.