The short:
Not luxury, but everything you need.

The long:
While this apartment does not have a microwave, bathtub, elevator (4th floor), TV, or a stereo, it does have everything you really need: decent WiFi, light, space, a kitchen, good location.

I would not say it's in the middle of La Condesa, it's actually on the western edge; but only a 15 minute walk to the heart of Condesa. There is a great supermarket just across the street, excellent street food, a juice bar on the corner, and several cafes within a block or two.

It's a lovely, tranquil, quiet neighborhood, safe to walk around at any time of day or night, and pretty to explore.

Be aware that if you come in winter, it gets quite cold. Most apartments in D.F. (including this one) do not have heat, nor insulation. There was one small space heater that helped, but that bare tile floor was always freezing.

The hot water is intermittent. The shower will run hot for about 2 minutes, then turn cold. I discovered if you then shut it off, and slowly turn it back on, it will get hot again and stay for the length of your shower.

The refrigerator is small, half-sized.. it would be a challenge for more than two people staying there (unless you eat out all the time).
The apartment was very clean, and the cleaning lady was there to meet me when I arrived. She handed me the keys and left. A bit more of a welcome would have been nice.

The beds are comfortable, and there are plenty of closets and big windows. There is no balcony or outside space to hang out.
The photos of the apartment are accurate.

Note that the EcoBici shared bike program is only for residents. It's a great system, but cannot be accessed by tourists, as it can be in other cities like London, Paris, New York.

I never actually met the owner, but she was responsive when I had problems:
My first few days there were great. Then the internet went out for a day. The next day the electricity went out, and it took 24 hours to get an electrician out to fix it. This was a real bummer, but I can't really fault the owner - I think it was just bad luck, and that could happen almost anywhere. She did refund a portion of one night for my troubles dealing with this.