Ale's place is great - two big bedrooms, a comfy couch and a full kitchen. Plus a beautiful terrace. It was very clean, the beds were soft, and it was generally a good home base. It's a bit away from the center, but close to Bosque de Chapultepec (and the archeology museum) and very convenient for our stay. There are delicious food stands at the metro, a ten minute walk away. There are two downsides:
1) It's very noisy because there is a giant hotel next door and the air conditioning complex is right above the apartment. It sounds like there is A/C running in the house but there is no A/C. Ale provided earplugs.
2) There is only one set of keys. If you are sharing with people who want to go their separate ways, you'll have to coordinate and walk up and down the stairs a bunch to let them in.