Originally Posted by
Eastbay1K
The main areas covered are Congreso, San Telmo, La Boca, Pto. Madero, Palermo, and even a stop in the hamlet of Las Caņitas (in the unlikely event you'll ever care to go there, or even less likely, know someone there

). 20 or so stops in all.
I have friends that live in a building in Las Canitas (street name Arce IIRC or at least near it) from which I can watch polo quite well if I don't care to go down to the grounds.