Kamran sb! here comes a suggested itinerary
Day 1: Islamabad to Naran. Stay at Naran. Be mindful, it will be great rush in Naran in July. There are a lot many hotels in Naran. I stayed in Hotel Blue Mountain located on Lake road. It is a nice hotel, recommended for families.
Day 2: Naran to Karimabad (Hunza). i would suggest stay at Hotel Hill Top. My last year experience of the hotel was great.
Day 3: Drive to Khunjerab and back to Hunza. stay in same hotel.
Day 4: Drive to Hoper in Nagar valley and back to KKH. then drive to Minapin and stay at Diran Guest House in Minapin.
Day 5: Drive to Astore (almost 4 hours). If u have ample time, drive to Rama valley and back before evening. Kamran Hotel in Astore is a gud reputed hotel. I stayed there in 2003. dont know the latest about that. Do negotiate with some Jeep driver for next day trip deosai and back to Astore. It may cost u around 12000 or even more, but if ur budget permits, dont miss deosai. Btw, ppl also dare to take their own cars at least till Sheosar, but i wont advise that.
Day 6: Deosai and back.
Day 7: Astore to Naran. U can even go further ahead if u like
Day 8: Back to Islamabad.
Plz also see my travelogue of last year family trip for some more information and tips.
4 Day Tour de Naran, Babusar, Hunza, Attabad Lake on Nissan AD (9-12 Aug 2015)