Biggest issue first: Please take special note before booking that this building has little to no sound insulation either between units or within a single unit. Light sleepers should probably look elsewhere.
We could hear the conversations of the neighbors through the walls, were woken up daily by footsteps of other guests coming down the metal stairwell (this is a major problem for all units next to the atrium e.g. Unit M), and even smell what the neighbors were cooking for breakfast via the crack under the door connecting adjoining units (there's no door sweep or other insulation). Within the unit, there are no traditional doors separating the living room from the bedroom from the bathroom. So sound travels effortless between the three areas.
Otherwise the unit was modern minimalist in its furnishings (lots of Ikea, big wall decor). However, I wouldn't rate the fit and finish as especially high. One of the bedside USB ports wasn't working, the selector for the nespresso had been broken off requiring one stick their finger into the internals to make coffee, one of the shower toiletries was near empty, another's dispenser was malfunctioning, the sliding doors were hard to maneuver without handles, and we found that the cleaning wasn't especially thorough (used contact left on the headboard).
All that said, the unit does have some really great advantages especially its prime location in Roma Norte. This unit was just a short walk (2 - 5 min) from many hip cafes and eateries with plenty of Oxxo / 7-Eleven convenience stores located nearby. It was also easy to walk to Bosque de Chapultepec and walk along La Reforma to the historic district. The neighborhood around the unit felt totally safe and the building also has a 24/7 security guard monitoring the electronically locked door. Finally, we appreciated the strong overhead shower after a long day out exploring the city.
Overall I'd be fine staying here again with the caveat that light sleepers should look elsewhere first.