We had a great stay at Olga's place in CDMX! She was very attentive and sweet, and also very flexible, we asked for a late checkout and she accommodated us without any issues.
The location is good, very safe, and the street is very tranquil, it's closed off for cars (but this can be hard if you need a taxi). It's very close to the Zocalo and all the museums in the region, and there are many options for eating and drinking, from street food to high-end places. For groceries it's a bit harder, with limited options.
The apartment building is very good, renewed with a new elevator, a terrace and a gym; the checkin was also really easy with the front desk. The apartment is also very good for 2 people, clean, well-equipped (kitchen, washing machine) and there's a place to work. The only downside is that it was a bit dark, it doesn't receive much natural light. The bathroom is spacious, but the showers did overflow one day.
Overall, the stay was great, and I'd definitely recommend the place and stay here again :)