We enjoyed every minute of our stay in Madrid and this great apartment was a big part of it. We asked for very early check in (9:30 instead of 15:00) and we got it.
The flat was very clean, you have everything what you need for your stay. We loved the location, it's very quiet, but only couple of minutes from everything you can think about (metro, supermarket, most of Madrid's attractions, food etc.). I definitely recommend Maria's apartment for everyone who come to enjoy Madrid vacation.
And thank you for our great vacation, guys.