After a hard day of walking and climbing at the falls, stop and have a picada and cerveza at the local market around the corner from the Panoramic Hotel as do the locals on their way home from work.  You'll see small tables set up outside a number of small grocers.  Ask any one of them and they will bring out a plate of cheese, sausage and olives with a variety of stuffings (the picada) and a local cerveza.  Cost for a party of 5 shraring 3 very large bottles of Quilmes lager (very strong) about $21. Delightful experience as the locals are very pleased to see tourists visiting their wind down spot.