Carol's place is great, incredibly central and has just what you need for a holiday in Madrid! I stayed there for two nights with 5 of my friends, and it was more than comfortable for all of us. It's within walking distance to all the main attractions, and very close to high-street shops too. The air-conditioning in the apartment was great, it was nice to be able to escape the afternoon heat by going back to the apartment! Overall, I would definitely recommend Carol's place to anyone going to Madrid for a few days, it has just what you need for a break away in such a beautiful city!