David's apartment is in an ideal location. In 5 minutes you can be in La Puerta del Sol; in 10 minutes La Plaza Mayor; in 15 minutes El Palacio Real or El Parque del Retiro, etc. And although the place is only 1 block from the very busy Gran Via, the street is quiet and there is very little noise.
The place is a bit smaller than the photos reveal but it's perfect for 1 person or a couple. And the bed is good size and very comfortable! David is a very gracious host and left coffee, milk, bread, etc for me upon arrival. I chose David because he is a super host (as am I in SF) and I wanted to stay in a place I knew would be well attended.
David is super responsive as well. The power went out once and David responded immediately and told me how to get it back on. Anyway, highly highly recommended if you want to be in a very central part of Madrid with easy access to everything the city has to offer. I would stay here again for sure.