I just had the chance to be in Mexico City for the first time. It was quite the experience. You can see the city for miles and miles while flying over it. It's pretty impressive. The airport had some interesting features. They had basically everything in English and Spanish, as well as quite a few messages in other languages (welcome signs in Japanese, etc.). When I just got outside of the airport, it smelled pretty weird. Some of the people I was there with said it kind of smells like dirt. The rest of the city I got to see seemed much better!
When we got to the hotel, a guy was standing outside and offered to take our bags, which were very few. One of our group members told him we were fine. The entryway of the hotel had one wall that had strings of beads covering it completely. It was pretty cool. The key we received was a card and is also used to turn on the electricity in the apartment. It took us a bit to figure it out, especially when the power kept going out after a minute or so. We learned that you have to leave the card in the slot to keep everything on.