I do not recommend this airbnb. From the get-go, when we entered the room we immediately noticed it was in bad shape. The floor laminates were coming off in places, the curtains had holes in them and would not shut all the way, the door to the balcony was broken (when we opened the door the handle came off!), the toilet in the bathroom was peeling off wood (for goodness sake replace the toilet!), and the shower had a lot of stains. For the price they charge, this is NOT worth it. I stayed in this same building with other two hosts (two other times), and the difference was huge, the rooms were in so much better shape.
As for the building itself, the front lobby security staff is downright rude and in the gym only one machine works.
I will say the location is great, but very noisy street. Not worth is for the price, you can get such better places in Buenos Aires for that price.