The school is located just south of the Plaza Anton Martín (metro station of the same name). There is a female-only "residencia" very very near there. It's owned by Jesús Martín Peinado, the man who also owns/operates Hostal Martín and Hostal Cervelo on Calle de Atocha (not far from this residencia). I think he still owns it but he doesn't have a website for it yet. You can contact him through one of his two hostel websites to ask more questions. Good luck!

Saludos, MadridMan