I would certainly stay again here.

The appartment is quiet, clean, very well located, and has most of the stuff one would need for a great stay in Madrid.

The only two (minor) negative aspects are: that hot water is not unlimited -- for two people is enough but for two rather quick showers, and that the sun only enters the apartment for a couple of hours a day. The latter problem is actually a feature on hot summer days.

Luis was very nice, accomodating, and prompt in his replies to our inquires.