Roberto has a wonderful place located about a 10 min walk away from IE Business School.
The room I stayed in was in perfect shape, and extremely clean.
The location is wonderful, with the Milla de Oro very near the apartment.
Roberto himself was very helpful, offering several suggestions for restaurants, supermarkets, local attractions, and shopping arcades.
He was also very patient as he helped me out with several questions I had over the course of my 2 week stay.
If you're a student looking for a place to stay near IE Business School, Roberto's apartment is a good choice for you.