It was a perfectly clean and nicely decorated studio room at an old building with a courtyard. It was quite enough for 2 people with all the stuff provided. Location of the studo was great; ie royal palace, plaza del sol, prado museum, el retiro park are all within a walking distance of at most 10-15 minutes. Franci was also very helpful although he was not there. We had to wait for an hour at first arrival but these kind of things may happen..
Overall, strongly recomended place and great host.