I enjoyed my month at Tania's apartment - it is a good value for a great location. My favorite thing was hanging out on the bed with all the great pillows and looking out through the big window as the seasonal thunder storms rolled in across the city in the early evenings.
The Escandón neighborhood is about a 10 min. walk to Condesa and the Chilpancingo metro stop which can get you to the old center or Coyoacán. There is a local market, laundry, OXO, coffee, tacos, sushi and more all within a couple blocks.
If you want to stay in a local neighborhood away from all the tourists and yet be close to the restaurants of Condesa and Roma then I highly recommend this charming apartment.