Hey! I just accepted a position at UH Manoa and I skyped with the grad advisor about housing. She said that there's some on campus grad housing but most students don't use it, instead most students get roommates and find a house to live in. After doing some research on craigslist, zwillow, ext, it seems that if you want to live by yourself, studio and 1 bedrooms cost ~1,000-1,500 a month in and right around Manoa valley. If you live with roommates, it's more like 700-900/ month. The traffic apparently sucks so I would try to live within walking/biking distance of the school (and apparently the busses are free but on "aloha" time which means you'll be late). Hope this helps?