We stayed at Fernando's place for one month. It is a modern design, a nice sofa, good TV and the showers had plenty of hot water if you feel like taking a long shower. The best part of this apartment however is the location. There are restaurants and bars on every corner. It is an easy walk to Zona Rosa, Paseo de la Reforma and Roma Norte. It is a 25 minute walk to Condesa, which is great after setting all day in the office and for an after dinner stroll back. And on weekends when we had more time we also took an hour walk out to Polanco and to the Historical Center of beautiful Mexico City. The 24/7 guards, Eddy and Oscar were very friendly, responsive, and helpful; great guys!
Worth mentioning, if you are a light sleeper, this isn't the place for you. It is in the center of the hustle and bustle that is Mexico City; if you want to be in the center of the city with all the conveniences of that, it is a trade off you take - and we were happy we did.