I stayed at three other AirBNBs while spending a month in BA, and this was by far the best experience.
Facundo is a friendly host, that's flexible/chill, and very personable.
The neighborhood (palermo hollywood) is in the heart of great restaurants, as well walking distance to a lot of the nightlife (but this block is quiet).
The common space is spacious, with a kitchen having modern appliances (which is not what I found at other airbnbs - many don't have a microwave), and a large street facing balcony.
The room is the best part. Tons of sunlight, large windows, large desk, huge queen bed, private half bathroom, tons of closet space (with hangars), with A/C and ceiling fan, and faces the inside of the block, so it's relatively quiet.
I can't recommend this place more and would definitely stay here again if I return to BA!