Hi, so I'm from America, and I've just decided that I'd be going to Japan for at least in week during the Christmas break. Now, I realized there is a ridiculous amount of planning involved.

One thing I really want is to be able to navigate and see on a map where I am currently. I contemplated buying an international data plan ($25 for 20 M for use on my iphone with GMaps. I've done some research for GPS devices where you can just download a Japanese map, but for some reason, I am unable to find a manufacturer here that has this functionality.

Does anyone have some suggestions?

Also, would anyone know of any good/cheap hostels around Tokyo?

Thanks