I worked from here for a week and was very happy with the place. Classy decor, strong WiFi and great location to explore Polanco or hop over to Roma/Condesa. Bed is comfortable and I really liked the rain shower. The hot water does take a few minutes to get started, but is excellent once its there. There is a security guard and cameras in the building, and a large gym area with mats if you need to exercise. Rosalia was very responsive too, we had a problem with the air conditioning on one day and she was quick to get us a portable fan while the issue was being fixed.
If you're a light sleeper, you'll want to carry earplugs since road noise can be a problem at night or early mornings. Thats probably the only drawback here, but its a pretty common issue in Mexico City.