This is a perfect little apartment for two people in the heart of CDMX. The apartment is located in the heart of the historic center with restaurants and bars at a stone's throw... the rooftop is absolutely gorgeous with plenty of space to enjoy a morning coffee or a few drinks of mezcal in the evening (recuérdese el mezcal se toma a besos).
There is noise, but you are in the heart of downtown... I used the fan as white noise and it worked for me. It would also be wise to keep the blinds down during the day to keep the sun from heating the apartment.
There's security 24/7. I felt safe the whole time. Especially since my flights arrive late at night and depart late at night. Getting an Uber was quite easy from the area.