Located on a small yet animated street between Avenida Atlântica and Avenida Nossa Senhora da Copacabana, Cafeína (Rua Constante Ramos 44, Copacabana, tel. 21/2547-8561, www.cafeina.biz [1], 8:30 a.m.–11:30 p.m. Tues.–Sat., 9 a.m.–8:30 p.m. Sun.–Mon., R$10–20) is a lively little café with sidewalk tables that make excellent perches for people-watching. Even if you have breakfast in your hotel, the pastries and coffee are so good you might want seconds. For light meals, there are salads and daily specials.
Links:
[1] http://www.cafeina.biz