I had a great stay at Rubén's. The apartment is in an excellent location, very safe and close to shops, restaurants, Zona Rosa, bars, Paseo de Reforma and also 1 block away from the Metrobus which can take you to Condesa and Roma áreas.
The apartment is just like the pictures, lots of space, comfortable Bed and was very clean and had nice touches like coffee, tea and bottles of water.
Finally Rubén was an Excellent host. He accomodated my arrival and departure without problems and kept in contact to make sure I was enjoying the stay. He was always available for any questions and made my stay very relaxing and comfortable. I recommend this apartment to anybody coming to México City.