This apartment is very close to all that's happening in the Centro of the city, so it's just a short walk to the zocalo and many, many places to eat. It's on a quiet side street with very little traffic, but it can get noisy at night from sirens and dogs barking.
Mariana's associate Juan Carlos took care of everything for us and he is very quick to respond and is very helpful. Mariana provided a terrific list of local restaurants.
Since the apartment is in the center of the city it's very old and the building is not kept up well, however the apartment is spacious and clean. Just be aware in advance that the building is not at all up to date or well maintained and you'll be OK.
For us the major drawbacks were the constant sewer smell coming from the bathroom and the lack of hot water. At best the water was "warm".