Deco's place is far nicer than the current pictures suggest: It's large, well-lit and stylishly furnished.
It's located on Rio de Janeiro park, a serene square with a large fountain, which is smack in the middle of Roma Norte. As you probably know, the neighborhood is filled with restaurants, bars, bakeries, boutiques and more restaurants. It's difficult to start your day poorly when you walk out of the apartment, into a park, and grab a coffee at Rosetta Bakery or Buna (both of which are within a block, depending on the direction you walk).
The apartment has two outdoor spaces, both of which you should use. There's a small patio accessible through two different doors and a gem of a private rooftop that you reach by walking up a staircase. The latter is huge, overlooks the park, and is equip with various chairs and a table with an umbrella. They could add some lights up there (or maybe I didn't find them), but it's a fantastic amenity.
As someone who has nightmares of getting locked out of an Airbnb in the middle of the night, I liked that the apartment doesn't have keys to lose. A 24-hour security guard opens the front door whenever you knock, and the flat opens with a digital keycode. Not a crucial thing, but more appreciated than I would have thought.
Deco was easy to reach and seemingly always nearby. I recommend his place for your stay in Mexico City.