There can be lots of places for group accommodations in the world but first of all you should think of group accommodation in Istanbul! Here is a few reasons:
Group accommodations in Istanbul are the cheapest: specially in our hostel!
Group accommodation in Istanbul will be funny: cuz the guys in Istanbul (specially around our hostel in Taksim) are really funny!
Group accommodations in Istanbul will be teaching you: cuz Istanbul life is so fast, so funny..
As a result we learned that the group accommodations in Istanbul are the best in this page:)