This is a steal at its current price.
The apartment is lofty, beautiful and with great indoor and outdoor spaces. It's relatively quiet for Buenos Aires (just a small road outside, with some passing cars. Not double-glazed windows, but never found that in BA on our trip), close to everything and smack in the best area of town.
It's new to AirBNB, so the host has some quirks to work out (missing trash can in the kitchen and a little sub-par cleaning, for example), but those are minor things. We also had good communication with the host through AirBNB, though they did not speak English and we instead auto-translated each others messages in the app. No sweat.
We would have loved to live there again.