Guide for Mexico City

• Roma Norte is my preferred place to stay. Condesa is a bit nicer but a bit more boring imo. Polanco is the fancy rich people area. All 3 are safe. Doctores, next to Roma Norte, is not so safe (especially at night)
• If you go to Chapultupec park, be aware that it is open for limited hours. I never saw such a large park (Central Park, Hyde Park, etc.) that is closed all day on Monday. I tried going on a Monday without checking this and was very annoyed!!
• Maybe my TOP recommendation is this vegan taco street stall. You might be suspicious of vegan tacos but they're good here, I went multiple times. They have a 2nd location that's a sit-down place, but this one is the original https://maps.app.goo.gl/tCuU9ek1MBSHNrZVA
• If you are near this taqueria, the quesabirria here was one of my favorites https://maps.app.goo.gl/PXSE4sPt5hC395XV6
• This place felt like an overpriced tourist trap to me (although it does have Peruvian food and such, you can probably find it elsewhere) https://maps.app.goo.gl/v5wp7p6UTUPpaHYYA
• Frutos Prohibidos is a chain of juice and salad shops. There are also street sellers for juice (like this one https://maps.app.goo.gl/4ycM4D8Hg3v11RhD9) but I preferred Frutos Prohibidos because the quality from the street vendors didn't seem so good, but I only went once or twice
• Mexican bakeries are cheap but feel a bit low quality. Too many things that are just white flour + sugar, not like French bakeries
• You can take public buses and metro to get around, they're safe. Even though online some people say they're not safe. Maybe just be careful of pickpockets, idk
• Bellas Artes is a beautiful building that you can enter. They have some nice murals and art exhibits inside. I spent over an hour here. However, the area near Bellas Artes feels like downtown Cairo chaos with overcrowded sidewalked (especially on weekends, avoid going on weekends!) and the park nearby is mostly closed and does not feel so safe to me.
• Barrio Chino is near Bellas Artes and is an interesting experience. They have things that are like Mexican/Chinese fusion, you might not see them elsewhere
• There's a few other museums and nice buildings near Bellas Artes, like Palacia Postal and some art museum, that might be worth stopping by for photos
• I visited Zocalo very briefly (the main plaza) but there's not much there
• Frida Kahlo museum might be interesting for you
• If you want to explore other neighborhoods without tourists, Benito Juarez could be one option (I went to this tea house https://maps.app.goo.gl/4XCzNcanKEZtWpaa9). Just take the cheap public bus (or metro) and walk
• If you go to Polanca, Museo Soumaya is huge and free and so big that 100% guarantee you will get tired after a visit. But the exterior alone is cool. Funded by the richest Mexican (former richest guy in the world)

General comments:

• the air quality is bad, some people wear COVID masks because the pollution can stink
• some bigger public buses have a women's only area. I learned by mistake lol
• There's a surprisingly large Chinese presence (shops, restaurants) and even other Asian food. Some history about it here https://en.wikipedia.org/wiki/Chinese_immigration_to_Mexico
• Remember to get outside the Roma Norte/Condesa/Polanca bubble a bit. It's very easy to stay in that area because the amenities there cater to foreignors (higher quality, more international food, etc.)
• I probably focused too much on tacos and delicious fresh guacamole (but idk when avocado season is), but I'm sure there's other interesting Mexican dishes to try