My sister and I really enjoyed our stay at Jano's place. It's a loft-like space in a very interesting converted convent. I must say I was fascinated by the building. The apartment is extremely clean and comfortable with a nice kitchen if you want to cook (we didn't apart from making coffee). Jano and Karolina were prompt in replying to my messages and helpful in response to my questions. If you want to feel you are a part of the life of Mexico City, this is the place to be. My single complaint is that someone upstairs played very loud music every night we were there. This is obviously not the fault of the host, however, light sleepers might want to take heed. We were so exhausted from tramping around Mexico City that we probably could have slept through almost anything!
All in all, a very enjoyable experience and highly recommended. This was my first Airbnb stay, and it sets a very high standard.