Communication with Tato's friend Endrina was very good and finding the place was easy. Tato's apartment is cozy and very clean. The location is fantastic, only a few minutes walk away from Puerta del Sol, and lots of great restaurants and bars around in case you choose eating outside. The only problem is that at the time of my stay there work was being conducted somewhere else in the building and so the corridor was filled with dust, and at sometimes it was noisy. However this was surely just a temporary handicap, so I would definitely recommend Tato's place to anyone willing to spend a good time in Madrid, alone or with their couple.