My wife and I and our 1 year old son stayed here for a little over a month (35 days). This is our 3rd time using Airbnb and our first longer stay in one. My wife and I have been to over 30 countries, but are a little late to Airbnb.
We really enjoyed our stay here and would recommend both the building and apartment. The location was great for a long stay as everything in Roma and Condesa are walking distance. For further excursions the building is about 10-15 min walk from the Metro station and less than 5 min to the closest Metrobus station. The host, Lakshmi, was very responsive and accommodating. We messed up the guest count limit a couple nights and didn't realize we were over the max (4ppl vs 3ppl max), but she was accommodating even though it was our mistake.
Couple items to be aware of (not complaints). The unit does NOT have a dishwasher as advertised. The unit was not serviced once during our entire stay, so expect to sweep and wash towels / linens as needed if you plan a long stay. The host said we could pay to have her cleaning person come by if needed as well. Again, not complaints, but informational if it is of importance.