Alright so I was just here for a few days with my girl - she's Brazilian for reference and I'm American. Have a few tips if that's something y'all are interested in.
My tips and observations are mostly non-game related.
General Thoughts
It had been about two years since I'd been here (solo) and I remember the women generally being better looking. The hipster invasion is strong here! Lots of shitty tats, poor style, and cigarette smokers of women seen out and about during the day in the city - although this concentrates in certain areas like calle Regina in Centro, Calle Genova in Zone Rosa, and the more hipster-leaning areas. I saw very few bangable women and even fewer stunners out and about during the day - but I didn't visit any high-end shopping malls or spend much time in Polanco. Also we didn't go to any high-end clubs at night.
I think that after now having traveled throughout Latin America extensively, my ranking of Mexico generally doesn't compare well with a lot of other Latin American countries in terms of women. I'd rank Nicaragua, Honduras, and Costa Rica above Mexico in terms of women. Were all the nice looking ones in Playa del Carmen for vacation? Maybe. But the lower class women are quite hideous here. This is unlike Colombia or Argentina where I noticed quite a few bangable girls from the lower classes walking around during the day in all parts of the city and in the metro/bus stations.
This place still feels pretty safe. Especially the neighborhoods of Zona Rosa, Roma Norte/Sur, Condesa, Polanco, and Coyoacan.
It's cheap for USD holders. Conversion was around 20 - 21.5 MXN to $1 USD during our visit. We took cash out at ATMs. Banamex gave a good rate and had modest ATM fees.
People don't love Trump. Perhaps that's to be expected. I was considering bringing my MAGA hat but didn't want to come back in a body bag either. I tried to broach the subject of politics in a gentle manner with many locals during my trip and didn't find a single pro-Trump Mexican...many were openly hostile towards the idea of him.
Getting in and around, Sim Cards, and Logistics
Uber is pretty cheap here. We used this a LOT. We took an Uber from the airport to our apartment in Condesa around mid-day on a Monday for like $103 MXN. That's about a 25-30 minute ride for less than $5 USD. I think the Metrobus ride from airport is like $30 MXN per person. Metro rides are $5 MXN - buy a ticket at the Taquilla at metro station in cash and you can get little paper tickets. This is a great option to get to centro and other neighborhoods, but it can be a little busy at peak times.
I paid $150 MXN for a sim card here with Telcel and it had I believe $50 MXN credit. You can also pay $200 MXN additionally for a plan that gets you 700 MB data and unlimited talk/text. Coverage was very good in the places we visited in MX and the 4g worked well. Top ups are easily done in any Oxxo store. Just tell them your cell company, phone number, and top up amount.
We used airbnb to find a private apartment in a nice area in the neighborhoods of Condesa and Roma Norte, and paid around $30 per night with big private bed, private terrance, big bathroom/shower and kitchen. There's probably better rates if you spend more time as there are big discounts for weekly or monthly stays...I would definitely stay in Roma Norte again as this is probably my favorite neighborhood.
Food and Drink
Food and the food prices is where this city really shines in my opinion. Though drinks are comparatively expensive for Mexico. Craft beer prices and cocktail prices are higher in CDMX in many places in the USA. I couldn't find any place to buy a six pack of craft beer for the apartment fridge. You pay a per bottle price that that price will be around $50 - $75 MXN. We got 5 craft beers for our fridge for around $330 MXN. That's about $400 MXN for a sixer or $18.63 USD. Comparatively, in the USA, you will pay about $8 - 10 for a high quality six pack of craft beer.
FOOD
El Vilsito - Peten 248, Benito Juarez - Best place in my opinion for Al Pastor pork tacos and gringas in the city. It's a bit disorganized in terms of ordering, is very busy, has weird hours, and limited seating, but this is the holy grail in my opinion for this style of taco.
Antojitos Lety - Privada Francisco Montes de Oca 96, Condesa - Great little whole in the wall serving small plates like Flautas, Enfrijoladas, Enchiladas de Mole Rojo, Pozole, etc. Great prices too, but it's super tiny. Open later so a good place to satiate the beer munchies...
Condesa Tianguis - Corner of Pachuca and Augustin Melgar, Condesa - A weekly street market (every Tuesday) in Condesa with an array of Taco, Soup, and other tasty food vendors. Pretty solid albeit somewhat chaotic and busy place during prime lunch hours.
Chilakillers - Av. Revolución 23 (Benjamin Franklin y Progreso), Tacubaya - Great Chilaquiles for breakfast here. My top pick in DF for that. Slightly hipster, but totally solid food. The super picosa Chilaquiles is probably one of the spiciest and tasiest sauces I've had during my travels. Full portions are large. Come hungry.
Fonda Margarita - Adolfo Prieto 1364, Tlacoquemecatl del Valle - Great little breakfast place with a daily changing menu. Open early like from 5:30 and closes before noon. I recommend the huevos con frijoles. Quite a unique and delicious breakky with tortillas. Probably some of the best refried beans of all time.
DRINK
For coffee, check this
guide. Probably best place for coffee in the city now is a place called Quentin Café in Roma Norte.
Damajuana Boutique Cervecera - Avenida Mazatlan 152, Condesa - Great little bottle shop with nice selection of MX craft beer bottles.
Mexicano Bar - Calle Regina 27, Centro - Smallish little hipster beer and brewery serving nice craft beer. Draft beer from Cerveceria 27 and other local breweries from 80 - 110 MXN per mug. Chill place to have beers in the street.
Bósforo Mezcalería - Luis Moya 31, Centro - Tiny little mezcal bar hidden behind a red curtain lit by candlelight. Open from around 6pm. Good place to taste some nice mezcal and craft beer as well. Good small intimate date place. Leans towards hipsterish, as there's no sign outside.
La Clandestina Mezcalería - Av Álvaro Obregón 298, Condesa - Another pretty smallish mezcal place in Condesa serving a nice selection of mezcals from around Mexico. You can also buy a bottle here as a souvenir or for the apartment if that's your thing.
El Moro - Eje Central Lázaro Cárdenas 42, Centro - Solid spot for churros in the centro, friendly place to take a girl and satisfy her sweet cravings..
Farina - Calle de Chihuahua 139, Roma Nte - If you get tired of eating Mexican food after a while, this spot has very good pizza (wood oven) and decent red wine selection, also more classy and good date spot.
CLOSING THOUGHTS
Pretty fun city to come with a girl. I think perhaps if you know where to look to meet women, this would be a fun city to live for a while as a single man, although not my first choice in Latin America. [For a single man, you would be silly to go anywhere other than Playa del Carmen or Tulum in my opinion if considering other MX options.] Seemed like museums would not be a bad day game option as I saw some decent talent in some of the museums like the National Art Museum and the Anthropology Museum. Otherwise, I'll be back here for the tacos, cost of living, culture, and great sunny and clear January weather...