Go. It’s really good.
A little bit more expensive than just grabbing a pizza but you won’t regret it. Hosteria Toledo offers all the local specialities of pasta, meat and fish, and you’ll still be able to eat a couple of courses with a glass of wine for about 15 euros. My favourites are the Spaghetti alle vongole (spaghetti with clams), the Bruschetta al Pomodoro (tomato bruschetta) and the Carne al Ragu (meat in sauce…doesn’t sound so special translated, huh). Good idea to ask what the daily specials are too.
Also, helpfully, they have a website (although not so helpfully only in Italian) which gives you a little taste of what they offer.
You’ll find this little trattoria in the Quartieri Spagnoli area of town, around ten minutes walk from the hostel. Once you’re on Via Toledo, the main shopping street, take a right when you get to the Banco di Napoli and you’re there!
Via Giardinetto a Toledo, 78