Its a very nice apartment. The location is quite convenient for exploring the city because it's very central and has good bus and metro connections. From the roof you can see the skyline with a lot of famous buildings and the pool is great for hot days in the city. There were only a few minor issues like the elevators which did not always work but since the apartment is on the third floor it's not a big problem. The sound insulation is quite bad which I guess is like that in all the buildings. I had ear plugs from the flight, so it was not a problem at all. But as soon as I took them off I heard the noises from the very busy streets from Buenos Aires.
All in all it's a great place to stay and the host always replied super fast.