Deservedly popular with gringos on laptops and smartphones – as much for its prime location on the eastern corner of Plaza 25 de Mayo as for its strong wi-fi signal. Snag a table fronting the large street-front windows for prime people-watching, order a frappuccino and cake, and you won't want to leave. It's expanded to add another level of seating.
The menu of salads, soups, pastas, sandwiches and even sushi (four/eight pieces B$22/45) is almost an afterthought, though enough to tide you over.