I've spent 4 months in BA and rented 5 different AirBnB's. Carola's is the best one for several reasons:
Location --> It is close to the high traffic areas of Palermo Soho and Hollywood (walk of cheap taxi), while still being it's own cute private neighborhood. In Carola's neighborhood, you feel like a local.
Kitchen --> Having a full kitche while traveling is HUGE. Most airbnb's in BA do not have ovens. Carola's has 4-stove top burner and oven.
Spaces --> this air bnb has a bedroom (king size bed), bathroom with TUB (so you can take baths), closet space, kitchen, living room, dining room. It's very nice to spread out in!
Some other great things about this location is the EcoBici stop next door, the Aguerro subway is very close, there iare two gyms (Red Fit and BIGG) next door, many fruit markets, a really good falafel and shwarma one block away, and Casa Nueza cafe as well as Daniel Bakery.