Situated right on the lush green Amsterdam Ave., Horacio's place is a fantastic base to get acquainted with the Condesa/Roma neighborhoods. Horacio himself is an excellent host and checks in often to make sure your stay is going well. He also responds immediately to any messages. In my case, I had some internet problems in the beginning and Horacio immediately installed a WiFi expander in the room, which resolved the issues. In several years of using Airbnb, I don't think I've had a host quite as "active" as Horacio!
As mentioned above, the location couldn't be better. Also, I'm an avid runner and being able to have a nice loop right outside the front door is a nice convenience. The street is quiet and the room is in the back of the building, so it is pretty well sound-isolated.
The room itself is on the small side, but the space heater makes this an advantage, because the room stays warm even when the rest of the building is chilly. Also, the lighting has been well-thought-out and there are plenty of lamps and lights around that you can adjust to your liking without dealing with glare from ceiling lights.
The kitchen/dining room setup is adequate for someone who does basic cooking at most. It does get a little tiresome after a while if you cook often or more elaborate things, but if you are out most of the time and eat outside, it wouldn't be a problem.