On our three-day visit in BA, we knew we wanted to squeeze in a little wine-tasting/education and this was the most perfect spot! It's mainly a wine store, but they also offer informal wine tastings. They were able to accomodate us without a reservation right when we walked in. The sommolier, Miguel, was so kind, knowledgeable, and wonderful. He led us through 4 Argentinian wines and explained the region of origin, growing conditions, etc. We are far from wine experts, and he was very helpful in answering our (likely silly) questions. The tasting comes with a really nice cheese board of local cheeses and snacks. Thanks, Miguel! Highly recommend.