Ricardo's apartment was a perfect place for the five days I stayed in Madrid. The single room was well equipped (TV, fan, AC, sizable closet with coat hangers), bed was comfortable with clean sheets, and the large window provided ample natural light.
The interior design of the apartment itself clearly had some thought put into it, and one feels completely at home in the living room and kitchen. If you need something to read, there are a number of interesting books (and even movie scripts) available as well.
Bathroom was clean, fan worked well, hot water worked.
Regarding the location, the Apartment is perfectly situated in La Latina, one of the oldest and most traditional areas in Madrid, while also being a quintessential spot for beer, tapas, restaurants, and terraces. If you want the old-town ambiance of narrow and windy streets to get lost in, colorful city walls painted with street art, and random hole-in-the-wall places to stop in for a quick beer, look no further. I'd stay here again if I had the chance.