This is a very nice apartment in a lovely, central part of Mexico City. It is light (mornings and late afternoons on the balcony are especially nice), fairly spacious, comfortable and very clean. The location is great too-- small leafy streets, two blocks to the metro, many nearby restaurants, and 10-20 minutes walk to Zona Rosa, Condesa, Roma, Reforma and Bosque de Chapultepec.
Two precautions: Light sleepers will want ear plugs. The streets are mostly quiet, but the bedrooms are on the street and the windows are thin, so you can hear horns, sirens and street vendors. Also, if you stay for more than a week, a cleaner will come, and you will be charged for this service. For me it cost 300 pesos. But it's nice to have the place cleaned mid-week too.