If 150 soles can spend you, almost US$ 50 dollars, in eating pastas and you want to make an impression on a good female, I recommend them these places:
Trattoria Di Mambrino Her belonging to the madman Ugo Plevisani
Manuel Bonilla 106 – height of the block of houses 2 of Larco Miraflores .
If and when you go with any girl that you merit expenses.
But, if you want to spend little, but having a good meal, and you like fishes and seafood, I recommend this place:
In front of San Borja's Municipality, Joaquín Madrid squares 4. They can eat with your couple for less than US$ 15.