First, the positives: the host Alejandro (Alex), the La Condesa neighborhood, and a couple other things. Apparently Alex was not used to long-term visitors (we were here for over six weeks), so he was surprised to hear about the problems that the one or two night resident might not concern him/herself with. HOWEVER he tried his best to quickly resolve each concern, and made the apartment a better place as a result. His communications were quick, polite and usually helpful. The location is awesome if you want personality-rich La Condesa, or you could choose more modern (and boring/expensive) Roma or Polanco as my wife would prefer. The señora who cleans (only about once every ten days) is nice, cleans really well, and will help you with little things for some extra pesos. The beds, bed linens and towels are also really good.
The negatives: many aspects of the apartment itself. It is listed as a house, but it is a ground-floor apartment with every conversation and fart upstairs eerily audible, parties are crazy loud. It lists a washer, but it is up three flights on the roof, is shared by all apartments, and the señora who cleans them all usually has wash in during the day. The picture shows a grill but it doesn't work. The bathroom is an old wreck: the bad black mold problem was treated with a coat of white paint, every millimeter of the bathroom is cracked, chipped, stained, and/or showing signs of mold. The kitchen has a tiny sink, a small oven/stove, zero counter space, a small fridge and a toaster oven (and you can use one at a time as there is only one outlet). There is a giant water tank outside the bedroom window and the motor goes off whenever it needs to, including the middle of the night. We had ants so bad for the first month that we were spraying and cleaning daily. My wife was in classes all day and I taught online all night, and we had a lot of connection/internet reliability concerns. AGAIN, the landlord really communicated well and hired pros to come and address each and every problem we had.
Bottom line: Alex and the neighborhood are so awesome that if you want this location for a short visit I say absolutely yes. If you plan to stay longer I would ask Alex for one of the other apartments as they all look better.