I interviewed @ OSHU for a fellowship, but don't know much about the actual psychiatry department.
However I can tell you the hospital campus of OSHU was very impressive-ultra modern design with several hi tech cool things. The people at the hospital were very nice--they're' known to be a hippy community. There's lots of Priuses & other hippy type stuff like Jamba Juice stores everywhere there.
The department there were very nice & cordial.
Unfortunately since I was going for fellowship & not residency, I can't really tell you much more that may help you.