I was staying a few days in Buenos Aires before embarking on a cruise. This hotel is in the center of town, close to everything! Shopping, restaurants, parks, tour offices are within walking distance. Just don't expect a luxurious Waldorf because you will be disappointed!
Rooms are small. Lobby wifi is free, but you only get 20 minutes gratis in the rooms, and room wifi is not available until 10:00 am. The furniture is old, but the mattress was firm, although pillows were too thick for my liking. I had to change my room because I shared a wall with the very loud elevators. None of these details affected my stay because I wasn't spending my time in the room anyway!
The staff was extremely accommodating for all of my requests. They even held my luggage for me after I checked out because I was leaving the city for a night and had no place to store it before I returned. Leonardo, Sergio, and Mariana are top-notch!