I'm writing this review from the point of view of a Californian visiting CDMX for the first time.
Alejandra's place is great. Clean, affordable and looked after by an exceedingly attentive group. Oswaldo and Alejandra made everything about the stay mindlessly simple and easy. The cafe downstairs is high quality by any standards.
The location is exceptional if you are in CDMX for history, art or government business. (Check out the Palacio Bellas Artes for stunning original murals by Rivera, Orozco, Sequieros and others).
If you are in CDMX for food and/or shopping you might consider staying in Polanco or Roma Norte for greater walk ability. Alejandra's place, however is only about a 30 minute Uber ride away from either and we had no trouble getting around town apart from the normal traffic.
All in all, this place was a tremendous value and Alejandra, Oswaldo, Jose and the crew down at El Callejon all were above and beyond.