I spent a 4 day break in Madrid, staying in Javi's apartment with a friend. It was very close to a metro station and there were restaurants across the road. The sheets were nicely ironed and the apartment was spotlessly clean. Javi left some coffee and fresh fruit for us. He also gave us a map and showed us how to get to the various sights.
If I travelled to Madrid again, I would definitely stay in Javi's apartment.