Mexico City also called DF or just Mexico, is the capital of Mexico and is a huge metropolitan area with around 20 million people living within its boundaries, being one of the largest urban agglomerations in the world. Unfortunately, because of the fact that it is totally surrounded by mountains, it is one of the most polluted ones as well.
From the Mexico City Travel Guide
Average cheapest prices by month for budget accommodation in Mexico City
You really can't get better than this. I stayed at El Patio 77 for a 7 nights and it was fantastic. The owners and everyone else involved in managing the hotel are professional, and welcoming. The decor is tasteful and elegant, but maintains a comfortable feel providing a homely atmosphere. ... more
Casa Gonzalez is a great place to stay for a while, clean and wide rooms with heaters for cold nights, hot water and comfortable beds. Well and safe placed, has a good service and an interesting menu for breakfast, the Wi-Fi is not the best but it's usable, also they must buy a good bike to lend because the one they have isn't in the best shape. ... more
Very small place, the people who work their are amazingly friendly, on one of the first nights I had altitude sickness and the woman working there went out of her way to make sure I was alright. The taps leak a bit and the keycards never seem to work but theres alwatys someone around to help, and otherwise there are very nice rooms. ... more