Many, I took a random class there and had friends there.
1) Decay is tremendous in Medicine: there are pests and cockroaches everywhere. Bathrooms are used very indecently and its not even safe. Girls dont dare go alone to several bathrooms in the building.
2) Under-budgeted: labs are unequipped and classes have an inordinate amount of people for the number of teachers they have.
3) Kafkesque paperwork and Draconian teachers : there are so many people going to medicine in UBA that students get no attention or assistance. The emotional health of med students is disastrous there, people break down a lot.
A few private med schools actually are pretty prestigious and when you study there, you can actually focus on studying medicine and not just surviving an ordeal.