The Green House is a very well positioned apartment. within a few minutes walking distance of the metro, and within easy walking distance of most of sights a tourist would wish to see. The local shops have all you really need, including a very good panaderia.
The flat is safe and secure, and very quiet, with a large comfortable balcony overlooking a small park. Most importantly garage parking is available 1 minute's walk away. This is a good place for a couple to see Madrid from.
Santiago is a good communicator and was very helpful and friendly.