We stayed in this apartment for a week and we liked it very much! It has fully-equipped kitchen with everything you may need to cook, a big fridge, a microwave and an oven. Also there is fantastic place to work on laptop, just in front of the big window. The bed is large and very comfortable. Also there is a gym and a pool in the building which are absoultely free, you just need to register in advance.
The location was great too, it is situated in the Avenida Paseo de la Reforma, a lot of shops, supermarkets and restaurants are just steps away. The famous Chapultepec park is very close, also the city center and Zocalo square are in 30-40 minutes walk. Also the Insurgentes metro station is very close so you can easily reach all the main sights of the city. And of course the area is very safe, even at night.
Kukun was a great host and always was in touch to help us to solve our problems and to answer our questions and to give us recommendations. So I would definitely recommend this apartment for everyone who is going to CDMX!