This apartment was perfect for our family of five visiting CDMX for two weeks around Christmas. It's in a 1950s/60s-era building in a modern style with very spacious rooms. It's furnished just a bit sparingly, and shows its age in minor ways, but has some nice touches and everything we and our teenagers needed to feel comfortable (but bring a light sweatshirt since it can be a bit chilly in the morning). It's also in a lovely neighboorhood, good for strolling. The street just outside can get fairly busy, but the noise never kept us awake at night.
Anzures is very close to some of CDMX's most popular neighboorhoods -- Condesa, Polanco, Chapultepec park, etc. but to walk to any of these takes at least 15-20 minutes and you have to cross some busy streets. So we ended up relying on Uber, which is incredibly reliable and incredibly inexpensive. The one downside to the neighborhood is the relative lack of grocery stores--while there are tons of nearby convenience stores (Oxxo, Circle K, etc.), the closest Superamas are a 20-minute hike. That said, there is a superb high-end wine & spirits store down the block and several delightful restaurants just steps away.
Finally, César was an excellent host. We didn't need to bother him that much, but he was unfailingly responsive when we had a question. Highly recommended!!!