For dinner, you should try the legendary Da Augusto, in the Piazza di Renzi 15, with its famous pasta a caccio e peppe. It opens from 12.30-15.00 and 20.00-23.00 all days. Around 15-20€ per person. If you can´t get a table (it is usually packed) another good option is the terrace of the Antica Trattoria da Carlone, on the Via de la Luce 5 (close to the Ponte Cestio and somewhat away from the most touristic area). Very good pasta dishes and, above all, an excellent tiramisu. 25€ per head. Closes on Mondays, open the rest of the week from 12.15-14.45 and 19.00-22.30h.
In order to get back, walk or take a taxi to the hotel (about 8-9€)