In every respect this is an outstanding apartment to stay in. If there is availability I would advise you to book ASAP.
Communication - Sebastian and Natalia are extremely responsive and provide very clear instructions and offer to help.
Location - nothing in Mexico City is really 'central' because the key attractions are so spread out. This apartment is very well located in that it is close to the anthropology museum and areas like Polanco and Roma, but also conveniently located by attractions in the north such as Teotihuacan and the Basilica of Our Lady of Guadalupe. I walked to many places and also used uber which is very good value - eg. £6 to Frida Kahlo's house on the other side of the city.
The apartment - extremely clean and stylish. Has everything you might need or want. Unbelievable gym, pool and solarium on the roof - better facilities than most 5 star hotels.
Overall this is the best Airbnb I have stayed in. I don't believe you'll find anywhere better for anywhere near the same price.
Thanks Sebastian and natalia!