If you are close to the Colosseum and looking for a cheap place to eat, you have several options. One of the most popular choices is 'Forno Campo de' Fiori', where you can find delicious sandwiches and pizza by the slice at affordable prices. Another option is 'Pizzeria da Baffetto', famous for its thin and crispy pizzas, which offers generous portions at a reasonable price.
If you prefer a more traditional meal, 'Trattoria da Teo' is a good choice, with typical Roman dishes such as pasta carbonara and amatriciana, at affordable prices. For a quick option, you can also consider the street food stalls nearby, where you can enjoy supplì (rice croquettes) and porchetta sandwiches.
Finally, don't forget to explore the local markets, such as the Mercato di Testaccio, where you can find fresh food and ready meals at competitive prices. This way, you can enjoy a delicious meal without emptying your wallet.