Marta and her husband were very patient with us as we initially got lost trying to find the apartment, and arrived around and hour and a half late! This was mostly due to us using the Metro from the airport and my wife being on crutches. With hindsight we would have traveled by taxi!
Our hosts were in no hurry, however, and spent plenty of time showing us around the apartment and a map of Madrid, making recommendations and giving advice based on our questions.
The apartment is very well appointed. It is modern, clean, bright, comfortable and spacious with efficient aircon. It is situated in the centre of the city and getting around is very easy. The beds are comfortable and the bathrooms have excellent showers. The kitchen really impressed because of the quality of equipment and utensils.The nearest Metro is a short walk away. There is a Lidl opposite the Metro but we preferred the wonderful small shops in the local vicinity. There is a fantastic fishmonger just around the corner, and several butchers. There is also lots of bars and restaurants/tapas within easy walking distance.