Recently, we stayed in this apartment for four nights. The apartment is immaculate and comfortable (on the 4th floor and there is an elevator), with all of the amenities that you'd expect. Jose Luis was a great host. He met us as soon as we arrived and used a map to show us where the apartment was in relation to many of Madrid’s must-see locations. He also recommended a series of restaurants.
The apartment has a washing machine but like the other places we stayed- you dry your clothes on a clothesline. The flat is very well situated - within walking distance of many of the ‘touristy’ attractions you will want to see in Madrid. We walked to the Royal Palace, the Prado, Plaza Mayor, Gran Via, and many others. The Renfi station is also within walking distance, and we took the train to Toledo (a must see) for the day.
The apartment also provides access to an endless number of excellent restaurants and shops. Definitely walk to the Mercado San Miguel, an upscale food market crammed with meats, cheeses, desserts, wine, etc.: but, be warned it always seems to be extremely crowded due to its popularity.
We would absolutely stay here again and look forward to doing so when next in Madrid.