Apartment is clean, very central, check-in is easy, there's a doorman, elevator.
Unfortunately, while I was there they had a problem with the hot water. I was told to leave it running for 10+ minutes to get hot water but even then it didn't always work. Had to tough out a couple of cold showers.
Be aware that Zona Rosa area gets pretty loud, especially on Friday and Saturday night. If you need quiet at night you should stay in a more sedate neighborhood.