This a cute little 2-bedroom in a great neighborhood. You quite literally could not throw a stone without hitting a delicious restaurant! And just a 10-minute walk to the beautiful Parque Mexico area, a gorgeous park with enough cute coffeeshops to last a lifetime. The area felt totally safe and there is a locked door and security guard at the front. The building was pretty quiet and the other residents are all friendly and nice. The building is a little bit older and not all the fixtures are "perfect", so beware if that kind of thing freaks you out.
For digital nomads, I worked the whole week I was there sitting at the kitchen counter on the barstools. It was actually pretty comfortable. Wifi was pretty good (100MB). During one thunderstorm we had a power outage - for about 30 seconds, so no problem there.
A couple things to note - the street is busy and can be noisy. Usually I'm a light sleeper but I was able to sleep pretty well even with the window open. Also, you are on the 4th floor with no elevator - if you are not able (or willing) to climb 4 flights every time you go out, this might not be for you.
Overall, I really enjoyed being in the apartment, I felt totally safe, and I put on a lot of weight trying to sample all the restaurants before I left (actually one morning I was going to a particularly cute shop for breakfast when I realized I wasn't hungry at all). This area of Mexico City is quite a gem.