We stayed six nights here (two adults and two kids who shared the second bed/foldout couch) and we loved it! The location is absolutely ideal, there are more delightful cafes and restaurants in a five block radius than we could visit. We felt safe everywhere we walked, even after dark. Parque México is gorgeous. We used rideshare apps to get around the city and the Zocalo was about 30 minutes on a busy weekday and only about mx$ 90.
The check in process was easy and the host was quite accessible and friendly. He left coffee pods plus enough bottled water for drinking that lasted us the whole week. The apartment is perfectly quiet at night and the kitchen is quite useable. It was great to have two bathrooms. Adorable terrace, comfortable beds, decent water pressure and hot water availability: what else could you ask for? The only downside was that in the rainy season there were a few mosquitoes that got in at night even though we closed all the windows. I recommend sleeping with a fan pointed at the bed- this helped a lot. Although the host provided some plug-in repellent it would be wise to bring some bug spray.