Alfredo and Ricardo's place is just as described. There are 5 flight of stairs we needed to walk up everyday but that didn't bother us. We saw it as a way to "keep exercising while vacationing" but wanted to point this out in case you have large suitcases like we did. The location itself is incredibly close to the Plaza Mayor, multiple restaurants, and the metro. The apartment is cozy and you can see how much attention Alfredo and Ricardo have made to make it comfortable. The apartment includes a hairdryer, washer, pots and pans, microwave, wifi, TV, etc. so you really do feel at home.
Don't have any doubts about this place, or the hosts! They were incredibly responsive, helpful and super, super nice. If and when we return to Madrid, we wouldn't hesitate to reach out to Alfredo and Ricardo again! Abrazos!