We are bringing 4 American college students to Madrid in September to see the Solar Decathlon. In budgeting for the trip, how much money should I expect the students to need to feed themselves? We hope to have an apartments, so not every meal needs to be eaten out, but we don't want to be stingy either. We are working with a grant and will also need to give them transportation money also. Any suggestions for the entire trip would be appreciated. It will be our first time in Spain, and we hope to be there about a week.