Eva's should be relied upon more as a source of information and a reference point than a restaurant. While the food is good, the menu is extensive, and the prices are moderate, you'll get much better food and service at other restaurants in town.
Nevertheless, should you choose to eat here, you can have burgers (around $3), pizza ($8), fresh fish ($6), Mexican ($4), and traditional Belizean chicken, black beans, and rice ($3).
Eva's is centrally located on the main drag in San Ignacio and is the headquarters for Pacz Tours, which we recommend over the giant Mayawalk Tours right across the street. Pacz is cheaper, the guides are better, and they've been doing it longer.