Translation of refuerzo

I grabbed a burger from an American fast food chain and swallowed it immediately, as I had not eaten for a while. I boarded the machine and could feel a slight stomachache but decided to ignore.
I walked down the main street of the town and soon found out that there was a nice place not far from the main square. It cost around two hundred pesos which was equivalent to twenty US Dollars.
By the way, after my horrible experience I had changed the hostel. The place was not really better but much more quiet and near the Ocean. I woke up with the sound of a siren. It was the police.