Just recently returned back from a trip to Mexico City with a friend, and stayed at Cristina and Bernie's Airbnb.
It was absolutely fantastic. When we arrive Christina greeted us and gave us a quick tour. She also gave us some tips and answer the questions that we had.
Their place is very nice. It has two bedrooms and two baths/shower. And like all the reviews the roof deck is a nice perk to have. And not to mention the Airbnb is very thoughtfully decorated. There are four twin beds, but I think they can be pushed together to crate two queens.
It is centrally located in the neighborhood of La Condesa. If you're not yet familiar with MC area, this is one of the nicer and up-and-coming places to be in - It is family friendly and safe. Conveniently located near great restaurants, a local market, and minutes walking distance to fantastic establishments. Oh, and they also have an honesty bar stocked with snacks drinks. This came in handy.
I would highly recommend this Airbnb for anyone looking for their first visit to Mexico City, and wanting a comfortable stay!