We discovered aperitivo completely by accident and now it's our favorite part of visiting rome. From 6-9pm many bars serve drinks €8-12 with substantial free buffets - though you need to pick places carefully to avoid tourist markup.

Il goccetto near pantheon has amazing wine selection with good cheese spread - yes its touristy area but the quality justifies the location. Salotto 42 feels upscale but smaller portions. Freni e frizioni in trastevere gets packed but the free food is substantial enough for light dinner.

Perfect transition from sightseeing to dinner without spending fortune. We often ate so much during aperitivo we skipped dinner entirely. Locals treat it as pre-dinner socializing not meal replacement but works great for budget travelers who choose the right spots.