My favorite of the three airbnbs I stayed at near the Condesa area. The rooftop apartment is small, but incredibly comfortable, and has an amazing balcony right outside. Bed is soft; internet is reliable; the shower is the first in the area to have very hot water. Location is central in Condesa, right next to Parque México and tons of restaurants. The only small possible downside is that you've gotta climb some very narrow stairs to reach the apartment, and there's a spot where I hit my head twice. But this has my highest reccomendation if you're looking for a comfortable place that's still affordable.