Nice place! We (2 adults) stayed for a month starting mid-January. The apartment is exactly as pictured. Big apartment, lots of space to spread out. Great price/value.
Location was 10 stars! 1 block from park, great restaurant 3 blocks away (La Loca Hambre). Oxxo 2 blocks away.
Relatively quiet (it is Mexico City after all, so some noise) but we slept well.
Secure - 24/7 doorman
Fully stocked kitchen which we ended up not using much.
Washer/dryer in unit was great.
Portable heater, which we didn't really need.
Very small criticism: the place has some "wear and tear" and could use a coat of paint, and some of the kitchen cabinets are misaligned and don't close well, but this is very small and is nothing that will affect your stay.
Never met the hosts, but they responded quickly to questions and issues. Hair dryer was missing when we arrived and a new one was delivered right away. Toilet handle broke on one toilet and it was repaired quickly on a holiday weekend.