Would recommend staying at Amalia's place! I stayed here for 1.5 weeks and enjoyed it very much.
The location is unbelievable — basically 15 minute walk to anything you want in Hipódromo/Condesa. There is a farmer's market/food market that pops up during the week nearby, great coffee shops 5-minute walk to work from for the day, tons of restaurants.
The apartment was clean and spacious, and the kitchen had everything you needed to cook. Amalia and Anna were so sweet and helpful. They gave me tons of recommendations and invited me to join them multiple times for different outings.
Only con would be there are no window net/mesh screens so bugs would fly into the room — just grab some bug spray and you'll be fine.
Would recommend for your next visit to CDMX.