The apartment is fabulous, it's super close to a supermarket (less than 5 minutes, walking!), malls and restaurants, and very close to taxi bases and tourist locales. The apartment is well furnished and comfortable, very sophisticated. Gonzalo is great in his communications and very helpful and friendly and he works with a property management company that is quick to respond as well. The WiFi was fast and very reliable (important for us because we work from home!)
The apartment is in an up and coming, formally industrial area of Mexico City (read urban renewal, there is some cool stuff going in!), and thus there is still some construction in the area, so that was the only distraction for us...construction noise from across the street 12 hours a day, 6 days a week (hence the 4 stars). This review is as of January 2013, so it may slow down in the coming months as they finish up the building across the street. If you plan on not being at home and spending all of your time enjoying what Mexico City has to offer, it will be a non-issue. All in all, I would definitely stay in this apartment again! Thanks, Gonzalo!