María Victoria's apartment is simply perfect.
It's in a good spot -- central but not touristic, quiet and close to the main landmarks and attractions. I'd say a 30-minute walk to Plaza de España and everything else is closer.
We found in the house everything we needed: great AC, comfortable bed and nice bathroom (with good water pressure and such), washing machine, ironing board, dishwasher.... really, everything. It was so nice staying there, also considering that we came back after lunch and spent there the hottest hours of the day.
I was concerned about the noise coming from the street because I had read some of the reviews that said it would bother us. My boyfriend and I had no such experience... actually, as soon as we shut the windows we could not hear anything at all from outside and it seemed like the room had been soundproofed.
We never cooked but the kitchen also seemed equipped with everything, and we found in the house some very good food for breakfast -- jam, cookies, fruit and such.
We never met María Victoria because she was out of town; we met Isca instead and she gave us very good advice on what to do/where to go.
I have given 5 stars before to nice rooms/apartments here on Airbnb, but this one really deserves them. We couldn't have asked for a better place :)