Someone kindly mentioned Mimi Santapa a while back: this seems to be the only YouTube vid of her dancing, and I'm linking it so I don't forget the name. She seems to have a great reputation as a teacher in BsAs, and it's said she hardly needs to travel to make a living from tango. She has, however, toured N. America and visited north England before.
I enjoy watching this. The dance sings along with the music, it's relaxed, effortless dancing, it doesn't require any anatomical peculiarities, any lifelong training, even any daily workout apart from dancing; it's just great basic salon, graceful, fluent, musical. There's a whole list of teachers I want to meet.
And the milonga, El Arranque, at 1759 Bartolome Mitre. It starts around 3pm, and at that time it's a bit of an old folks' milonga, everyone else being at work, I guess. People stroll in, order a coffee, read the papers, chat, dance a bit. It's a very relaxed, easy atmosphere, very courteous. Later it gets busier. A good place to go if you have a partner and want to practice, as it's not crowded, or just for a leisurely coffee. & it's way off the tourist routes.