Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Q: I will be arriving in Barcelona on the 13th of September and I will be staying together with my girlfriend for 6 nights.

Although I have a job, as students the budget is, let's say, a little limited. The hotel and the flight were already pretty expensive, so we would like to know if there are some places where we could eat a good lunch at an affordable price (10 euros, let's say).

First we will stay in El Guinardo neighborhood, and afterwards in La Vall D'Hebron. Nevertheless, the recommended places to eat can also be in nearby neighborhoods of the previously-mentioned ones or somewhere as "downtown" as possible.

If you think I can easily find affordable places to eat by just exploring the city, that also works for me.

I hope I don't sound cheap.

A:
First time in Barcelona: affordable places to eat for a student