Most of the fancier restaurants in La Paz are at the bottom of the Prado, around the vicinity of Plaza Isabel La Catolica and Plaza Avaroa.
El Consulado, Calle Bravo 299 (Behind Hotel Plaza(Prado)). New place in La Paz. Best brunch in town, gourmet food in beautiful surroundings. Wifi and garden. Working with the "New Andean Kitchen" and organic coffee.
Restaurant Sabrosa Taiwanesa, Calle Chichas No. 1208, Zona Miraflores, 2221186 (a short walk or quick taxi from Plaza Isabela Católica, just on the other side of the Puente de Las Americas). New family-run Taiwanese restaurant. Flavourful dishes and a good sized menu (veg and non-veg) in a clean setting. 30Bs for chicken with spicy peanut sauce (2-person portion).
Utama, top floor of Plaza Hotel, Av. 16 de Julio 1789 (Prado). With its fabulous view of the city, the Utama has served the likes of Fidel Castro and Alberto Fujimori (embattled former President of Peru), yet the main dishes (Bolivian and international, in portions ample for two) are only around Bs 50 (USD 6.50).
Angelo Colonial, Calle Linares 922. A dark, bohemian cafe set in an old mansion decorated with scads of antiques. Serving Bolivian and mediocre international food. The best drip coffee in La Paz. Painfully slow service. Another location on the Prado. Serves llamas.
Tambo Colonial, in Hotel Rosario. Lavish breakfast buffet for Bs 20 (USD 2.50), great international and local food from 12:00 to 23:00. Try the Lake Titicaca trout with Beni almonds: one of the best dishes I've had in Bolivia.
Naira, Calle Sagarnaga 161. Catering mostly to travelers (and guests of the hotel -- see below), but a good sampling of Bolivian dishes. Expensive.
Alo Cubano, Av. Aniceto de Arce. Best place to pretend you're back in the fifties plotting a pan-American revolution with Fidel and Che.
Contigo Peru, second floor of Edificio Alameda (on the Prado). Good ceviche and other seafood.
Eli's New York Deli, on the Prado. Try ordering with a thick New York accent and see what you get. Prices gone sky high this year.
Sultan, San Miguel, Zona Sur. Great Arabic fast food in a tiny setting. Try the falafel for 7 Bs. Order a "super" for 10 Bs if you're hungry and be there for lunch when the boss isn't around (bigger portions).
There's a string of inexpensive pizza and hamburger joints on the west side of Avenida 6 de Agosto south of Plaza del Estudiante. Sergio's is considered the best, and is good for checking upcoming music venues.
Pizzeria Italia, Calle Ilampu 809, serves nice breakfasts with a friendly smile.
La Mia Pizzeria, Calle Ilampu, below one of the two "Pizzeria Italia" branches on Calle Ilampu. Cheaper than "Italia" with more American style pizzas. Take-away available.