I just came back from nathiagali, too much crowded, prior booking without payment will not work. Go there you will find some place but keep in mind of around 5000, you can find in 2500 or pluse but that will not be for family. I recommend the mochdara near Elite hotel up side you will find cottages there good for family this place is 1 km from nathiagali main bazar, you will get parking and peace full envoirme nt there, I hired a two room cottage with two bedroom kitchen and drawing in 9000