Enjoying a wonderful lakeside location west of Posada Schumann is French-owned Tul y Sol (tel. 5293-7997 or 5854-5365, all meals daily) offering decent sandwiches served on thick slices of bread, grilled fish, and pasta.
Located up the path toward town from Posada Schumann, Il Giardino (tel. 7804-0186, 4 p.m.–midnight Thurs.–Sun.) serves delicious burritos, pizza, and spaghetti dishes in a tranquil garden setting. It also has Internet access.
Next to Las Pirámides, Il Forno (dinner only) is another recommended Italian restaurant.
For breakfast all-day, your best bet is Restaurante Las Mañanitas (at Hotel Aaculaax, 8 a.m.–4 p.m. daily, $2–5), where you’ll find the usual staples such as eggs, fruit smoothies, granola, and pancakes in addition to more exotic cravings such as shakshuka (a spicy Israeli egg-and-tomato dish similar to huevos rancheros).
Heading into the town center from the lakeshore and crossing the main road through town, you’ll find Blind Lemon's (tel. 5540-0399, www.blindlemons.com , 11 a.m.–10 p.m. Mon.–Sat.), inspired by blues musician Lemon Jefferson and housed in a pleasant colonial-style courtyard. Tasty burgers, pizzas, steaks, chicken, and pasta are on the menu. There’s live blues on Fridays starting at 8 p.m. and movies are shown on a big screen almost every night.
It bodes well for the newest restaurant in San Marcos, F'e (tel. 5994-4320, 7:30 a.m.–midnight daily, $5–12), where you can feast on curries, pastas, meat, and fish dishes in a sublime garden atmosphere accented with Guatemalan textiles. There’s a covered second-floor patio bar.