We stayed 8 nights in Angela's apartment and we enjoyed it very much. It is a clean and cute place. We felt safe and welcomed. There was all we needed (a mercado, a grocery stores, a little family own restaurants, a coffee shops, a post office, a store with a high quality folk art items, an awesome pulqueria, etc.) near by, less than 5 min walk.
The apartment is 5 minutes walk from the Bellas Arte and the Alameda Park.
It is 0.5 mile away from Zocalo and Templo Mayor Museum.
There is a very nice roof top patio from which you can see the cathedral on Zocalo.
We had a good night sleep every night. Of course it is México and I always will recommend a set of earplugs and an eye mask for a 100% rest. Still I feel that the street on which the apartment is, is a quiet one most of the week. Of course it is a very different experience on Friday and Saturday night.