All the tourist hotels have buffet breakfasts. Those of the Hotel Meliá Habana (Paseo, e/ 1ra y 3ra, tel. 07/206-9406) and Occidental Miramar (5ta Av., e/ 72 y 76, tel. 07/204-3584) are recommended.
For fresh-baked croissants and good coffee, I like Pain de Paris (Calle 26 e/ 5ta y 7ma, daily 8 a.m.–10 p.m.).