I chose this location because I used to live in Residencial WTC until January this year. It is excellently well located in the center area of Mexico City, a few steps away from restaurants, a supermarket, shops, and everything you may need. It is also a few steps away from the WTC convention center, ideal for business trips or family trips (I am a working mom traveling with my baby and nanny). The apartment is beautifully furnished, with two bedrooms, each one with one double bed, and a fully equipped kitchen. It is also very sunny and has a nice view to the building gardens. Parking for two cars is also included.
The building has beautiful gardens, a gym, pool, kids area and even a small room with toys and amenities for babies. It is connected through the parking lot with a small shopping mall with a supermarket.
My advice would be that you ask if everything works properly (The dryer didn't) and request to be provided with enough towels for your stay (or bring additional towels in case there are not enough towels for you), and request an additional door key. Also, request additional linens (we wanted to wash our linens after 3 or 4 days but, since the dryer wasn't working and there was not enough room for hanging, couldn't risk to not having them dried fast enough). Other than that, we had a wonderful stay and would happily come back some other time.