Very well located and very good value for the money, let’s start there. Excellent location (safe, walkable, taxi will find it easily if you tell them Paraguay street near the children’s hospital, etc.)
The staff is friendly and helpful. They are available all the time!
Place has mini fridge and nice kitchen. Washer and dryer I was told was in the top floor (you provide soap) but no gym.
Now... I stayed at 2 apartments in the building during my stay. The first one faced the back, was much darker, and was more different from the pictures. The bathroom was tiny and you could not even place the rug in front of the shower or the bathroom door would not close.
Now, the second apartment was in the 5th floor and faced the street. Much much nicer, a lot closer to the pictures. I really appreciate that they moved me to this one at no cost.
Biggest problem... the internet. There is WiFi in every floor but no matter which one you connect to, they all have the same problem. I could not even browse the internet many times. It would be better at night, sometimes. I did not tell them about it because it was clear the problem was global to the whole building. I think this is easily fixable.
Overall, amazing value for the money!