At dinner, the quesadillas are offered as an appetizer, and would make a nice one to order for the table. The red pepper pasta can be an entree at lunch or dinner. Because it's so small, Southwest Bistro has limitations. It doesn't have a bar, but you can order wine, beer or margaritas. Other desserts are made for the restaurant.
Some tables are close together, and interior decoration is minimal.
I don't know whether it's a curse or a blessing, but Southwest Bistro at noon is popular with Post-Gazette employees. One day at lunch there were three tables of PG employees, who had all arrived separately, and several other diners. People started to leave. Soon no one was left but PG folks. Columnist Brian O'Neill figured it out.