The Aspen was an all-around sub-par experience. The rooms were average sized (a little on the small side), which isn't a problem, but there is very little shelf space which made it hard to put everything somewhere other than on the floor so the room seemed much smaller. The furniture was outdated, and the drawers in the nightstand jammed a lot. Carpet and wallpaper was old and pretty worn too. The good things were the nice plasma TV (seemed out of place compared to the rest of the room-haha) and the nice bathroom with whirlpool (also seemed out of place), but there was no shower curtain which was weird.
The rest of the hotel was pretty bad, as well. The lobby was tasteful, but unimpressive and small, and both the restaurants were mediocre (actually it is really just 2 separate dining areas-both have the same menus I believe). The one night we did eat at the hotel for dinner, the service was slow and the food was so-so, and served cold. The buffet breakfast was also relatively lame, with runny eggs being the only hot option, a few cold cuts, some fruit, and some breads.
Staff members at the Aspen were friendly, but somewhat unhelpful since most spoke very little english and seemed like they were not properly trained for their positions. For example we had a maid come by twice asking if we needed our room made even though our room had been cleaned already, and the reception staff on duty did not know how to issue a new key for me and had to call a manager to do it.
I visited the sauna, fitness room, and pool on my last day and was thoroughly disappointed with them too. The fitness center consisted of 1 treadmill and 1 upright bike in a small room the size of a bathroom. The sauna was not and there was mold on the wood in it. The pool was by far the scariest. It was closed for the day, according to the maid, but frankly I would've been more concerned if it were open. It was filled with some kind of grey organism, and was grimey on the edges (see included photo).
Overall, Aspen Towers has very little going for it especially compared with some of the other more unique, classier, and similarly priced hotels in Buenos Aires. Although its location is good and close to good shopping, the Aspen should be avoided by all unless as a last resort.
Happy travels!