go in August end or september, naran will be all empty as its off season. all hotels are totally empty and dirt cheap. Pine Park Hotel can be booked at as low as 2500 per room per night. 5 days is enough. Naran itself is a heaven, then the surroundings are like out of this world. from Islamabad you can hire a corolla to take you there for around 12,000/- one side. divide between your friends. Saif-ul-malook, Lulusar, Babusar are main attractions with excellent scenery during the journey.