The stay was awesome at Raul's place, it provided us with everything we needed. He was very friendly and welcomed us even after midnight as we landed so late. It was very very nice of him. He also showed us around the apartment and gave a detailed guide about the transportation and tourist objects in Madrid. We were very happy to have this room and we definitely would come back if we visit Madrid again.
The place was close to the central station too, just one stop by train. The train was 5min walking distance away from the apartment.