First off, this apartment is NOT suitable for 4 adults. The second bedroom is tiny, the pictures make it look bigger than it is. The second bedroom has a weird stacked Ikea twin bed that pulls out and just enough room for the door to open, and that is it! If you are 4 adults, simply look somewhere else.
Second, the apartment was poorly stocked: no spare toilet paper, no hand soap, no dish soap, and the spent tube of a paper towel roll. I expect the basics to be provided. Some maintenance was also needed as we couldn't close one window nor open another in the living room. The shower in one bathroom and sink in the other were clogged.
Finally, communication was non-existent after check-in. They didn't respond to any AirBnB messages nor text messages sent to the person who checked us in.
On the plus side, the location is excellent. It's close to subways and walking distance to the old city (Barrio Gothic). Overall, the worst AirBnB I've had in Europe.