Madrid was a fabulous experience, most especially because of the location of Rut and Oscar's apartment. Both Rut and Oscar were excellent communicators, easy to get in touch with and very quick to respond. They even provided a little breakfast with fruit and chocolate milk powder and coffee. Very sweet of them.
We needed a hair dryer, they got it to us right away. The location is so perfect, walking distance to metro, shopping, Plaza Mayor, and a really fancy market. The apartment is perfect for four people, any bigger it'd be a little too cozy.

I would definitely use their place again :)

One thing to note is that there are no elevators...pack lightly.