There's a great deal to love about this place. Alejandra is super-responsive and helpful. The building is very chic, with nice doormen on duty 24 hours. The beds, bedding, towels, furniture, and bathrooms are all first-rate. And having three bathrooms, as others have said, is really nice. The top floor has a gorgeous pool, a jacuzzi, a well-equipped gym (which we used), killer views, and -- no one mentions this!-- a small spa. It's run by a lovely woman, Ana, who offers facials (I had a good one) and massages, for bargain prices by US standards. There's also a small cafe counter with coffee and snacks.
Our only issue was noise. It's protected from street noise, so that's good. But the master bedroom is open to the living room, and the other bedrooms also have open spaces above the doorways, so there's no noise privacy. If someone's watching TV in the living room or even making coffee, someone sleeping in the master will hear it. So it's best if you're all on more or less the same schedule. There's also some ambient noise from the gym downstairs (open to the public-- a different one from the rooftop one for tenants) and from the strange building practice of rolling dumpsters on the grooved driveway in the middle of the night.
It was unusually chilly during our New Year's stay, and as is true of almost everywhere in Mexico City, there's no central heat, so we were cold in the daytime (perfect for sleeping though). They provided small space heaters, which helped, and they might get larger ones for the future. But I think that's not normally an issue-- my guess is that it stays nice and cool inside during the hot months.
Definitely highly recommended, as long as you don't want totally private bedrooms and don't mind some ambient noise.... that's big-city living, after all!