Consuelo's place is great. The location is amazing, walking distance to all the main places in Madrid. The apartment is great and the decoration is very nice. It's a little smaller than it seems in the pictures, but it's a perfect size for a couple, or even 3 people.
One thing I'd like to comment is that the apartment is in the 4th floor and I didn't know since it's nowhere in the description. It wasn't a problem for me but it is a lot of stair and it will be a challenge if you have too many (or heavy) bags. Alberto (Consuelo's husband) was there for our check-in, he is very nice, he gave us all the information about good places to visit in Madrid, and he also helped me carrying the bags to the apartment. Another thing important to know is that if you make some noise after 10pm, the neighbors will complain... I was there for 45 days and the only two days I made some noise (it was not a party, just more loud conversation) after 10pm I was contacted by Consuelo and Alberto, they were very polite, but I think it's important to add this info here.
Everything else was perfect and I definitely recommend Consuelo's place.