Ale's place is spacious and fun -- south-facing floor-to-ceiling windows give you a great view of Reforma, as well as construction on a new skyscraper directly across the street (genuinely fun to watch). Location is convenient -- easy access to Bosque de Chapultepec, some nice cafes and restaurants in Cuauhtémoc, and a 20-30 minute walk to Roma & Condesa. Ale & Roberto were very friendly, helpful, and professional.
About those south-facing windows... they heat the place up! We were out all day but would return to a very warm apartment. Using the fan to vent out the hot air and then blow cooler air in was easy, though.