The appartement is very clean, has everything you need and its location is perfect, cause it's just a 10 min walk to the center and habour and all the main attractions :)
The only thing you should be prepared for are the thin walls and the neighbours enjoy listening to music during the day. So during the day it can be a bit noisy but it was very quiet at night, so for us it wasn't a big problem. The small kitchen didn't bother us too much neither. :)
All in all we were happy with the apartment and would recommend you to stay here if you plan to stay in the centre of Buenos Aires! :))