I've stayed in a lot of airbnbs and Celia's place is certainly one of the best.
The place itself is very clean and comfortable. It has a very calm style that makes you feel right at home. The communication and check in is perfect and although we didn't meet anybody, we knew they were available if needed. We even had some snacks, water and soda left for our arrival, which was a very nice touch.
The location is fantastic. Mexico city is huge and in our 5 days we barely scratched the surface but La Condesa is one of the most beautiful neighbourhoods I've ever visited. There is so much to do nearby but the flat is in a very quiet location. Some reviews mentioned the gym next door but it was nowhere near as loud as we expected.
Overall, 10/10. Mexico city is one of the best cities I've ever visited and Celia's place is the perfect place to base yourself.
Thanks Celia (and Alejandra)