This is a cosy, beautifully renovated and decorated apartment with things of nice quality in a secure building with an interesting (heart of Chinatown) and great location (steps aways from Bellas Artes and the historic downtown). Take the metro rather that the metrobus that gets stuck in traffic. The closest one is Bellas Artes.
Raquel is very prompt to reply and address whatever issue may arise as is the person who does the housekeeping. It is a nice plus to be able to leave your luggage if you need to stay past the checkout time and walk around or enjoy the lounge on the top floor.
Don't miss Puebla if you get the chance to go! It's only two hours outside of Cuidad de Mexico and it is well worth it; a wonderful experience really, especially after the noise and commotion of a large city.