We were really happy with the flat of Mari, it is a really nice appartment, preferential for couples, in the city centre of Madrid. The flat was really clean, everything worked, and in genereal there is everything you need for a stay in the spanish capital. Really enjoyed it. Cannot say something negative about Mari or the flat, so i really recommend it, however (like i said) more for couples, as there is 1 big bed. Also, the appartment had an Air Conditioner, so you don't have to worry if it is very hot in Madrid. Furthermore, there are Metro Stations approx. 5 min. away from the apartment.
Really recommendable, thank you Mari! :)