I highly recommend staying at Azucena's place because of the great location, the comfortable quarters, and Azucena's warmth and welcoming as a host.
The place is very central to a wealth of attractions, both walkable and accessable by metro. There are so many fantastic restaurants and stores in just a few blocks walk.
I also thoroughly enjoyed talking with Azucena. She is an extremely bright and warm woman, one you'll hope to see again in your travels.