I stayed at the Hilton Mexico City Reforma in June 2013 for business. A colleague selected the hotel and I'm very pleased with his choice. As soon as we pulled up to the hotel, the bellmen were right there but were also OK when we declined their help. The lobby is very modern - all chrome and glass and leather with an atrium effect that really set the tone. The multilingual front desk personnel were efficient and friendly. Even though my room reservation was under another name, the front desk was able to quickly transfer it to my Hilton Hhonors number and name.
My room was on a high floor, overlooking the Reforma area. I was very pleased with the view and being high enough up that standard road noise wouldn't bother me. The room itself is enormous. I think it's the largest standard room I've ever been in. The dark red walls and dark furniture gave it a very clubby type of feeling. I had two doubles, a work desk with chair, a large console table/minibar, flat screen TV and more than enough room to do cartwheels if I wanted. The bathroom was top notch - large granite counter, deep tub and shower and the toilet with phone in a separate room. The bath amenities are Peter Thomas Roth (yes, the type of amenities made me very happy). The towels are nice and plush. And you get two small water bottles for the bathroom. Everything seemed to be very clean. And the AC worked very well. I could find nothing in the room that was an issue.
You do get charged for wifi, which is a negative. However, the signal was strong and I was able to access it in nearly all parts of the hotel. I did eat at the on-site restaurant and it was one of the better hotel meals I have had.
The location seems to be great for sightseeing, although with my meeting schedule, I did not have a chance to do so. The bed was comfortable and I was very happy with the water pressure in the shower. I would absolutely return to this hotel the next time business takes me to Mexico City.