We had 2 lunches at Alto and both were superb and overwhelming. There is a great family atmosphere at the restaurant that makes you want to just sit back and enjoy. I highly recommend the lomo. At 90 pesos ($12 USD) its great value and enough for 2 with a starter (provolone / chorizo). The owner was good enough to change USD for us at 7.5 pesos which was also handy. Place is a bit hard to find so ask at the tourist info place if you can't find it.