RE: USP

very simple things could become a USP.

I've seen somewhere that a fish n' chips shop using "healthy and fresh" as their USP.
100% vegetable oil and fresh (as opposed to frozen) fish.... but i can imagine his costs for fishies would be high as a rocket. The owner also runs a seafood shop across the road though.

USP could be as simple as that.

another very successful example there's a place called "Ibuki House" in Melbourne.
it's a japanese 私房菜. $50 (HKD400) per head. Ibuki-san used his own garage for his customers.
Lately he earned so much he has 2 restaurants now and one of them is located in a hotel.

another even more successful example is "Tempura Hajime"
They only serve 12, yes, twelve, customers per night. Fixed menu and something like $75 (HKD600) per head.
Bookings essential and restaurant is run by 2 people. The chef and his wife.
The tempura is so good that there's not a single drop of oil on the grease paper for every tempura dish.

What about a 私房cafe?
Book your room and there's nobody else disturbing you. Perfect peace and place for your group of friends. You get excellent food and the menu changes weekly with a different theme and you don't need to fight over the boardgames with another group of guys.
Just joking.... doing that we won't have enough customers to make a profit...