Heidi's place is close to La Condesa and Roma, the trendy neighbourhoods of Mexico City. There are cafes, a supermarket and restaurants nearby within a few minutes walking distance of the aparmtent. Heidi is very prompt with communication and has been a very helpful and friendly host when needed.
The apartment building has no elevator and the apartment is on the 2nd floor. The door is secure with multiple locks.
A previous reviewer complained about hot water. Note that you have to leave the shower water running for a couple of minutes before it is hot. This was not an issue for us.
We loved Mexico City and would stay here again.