Thanks a lot, Im currently busy with arranging my trip in Tokyo and I will most likely stay in the Khaosan Hotel. First I wasnt really happy with the locating, so I was looking for any youth hostels close to Shibuya and Shinjuku but for some reason most hostels are located in Asakusa region. As I will order a 2 week JR pass, it also wont cost me anything extra to take the metro (knowing that the JR subway line perfectly connects the places I want to visit).
Indeed hostelworld.com seems to be the most interesting website, im also using it. How much in advance did you book ?
Thanks a lot for the information, much appreciated !