I cannot recommend this place highly enough--great, spacious and spotless apartment in the middle of a bustling neighborhood. There are fantastic places to eat on every street, including bakeries, and you're a few minutes walk from the Zocalo.
We did a ton of research and I am SO glad we settled on this apartment! Alice and Albert were extremely gracious and very prompt in their replies.
The apartment can get rather warm, despite the A/C in the bedroom but we managed fine in the evening using that and a fan. To be honest, this is an adjustment that spoiled Americans like myself will have to make regardless in Mexico City because A/C isn't used as liberally as back home. Even Uber drivers tend to roll down their windows as opposed to using it. So my advice, if you are from The States, is to prepare for that no matter where you stay.
Oh and if you are coming to Mexico City, DEFINITELY check out Teotihuacan, about a 45-minute Uber ride away. Defies description.