I lived in Bolivia and Peru for over 2 years and have visited several times as well. This is place is pretty great. For authentic and unique dishes from the Andes try the Papas a la Huancaina and the Salchipapas (hot dogs and french fries). I had the Lomo Saltado as well and it was great and the flavors were dead on. My wife and I will be going back soon. Also always nice to wash it down with an Inca Cola or Chicha Morada.