This is a small, but good apartment located in the San Nicolas area. It is about midway between the Obelisk and Puerto Madero. There are a few walking streets nearby with restaurants and stores.
I slept well on the bed. The air conditioner worked well. The internet was solid (I was working there and never had issues).
If you want to cook, the kitchen area is a bit small.
Tip: The hop on hop off bus beginning stop is just three blocks south. I would recommend doing that if you have not seen Buenos Aires before.