It is a tiny little airfield. Friday harbor would be an easier place to fly into, same island, but better facility. I have been to both.
As far as Roche, it has a crosswind AT ALL TIMES. It is narrow and rolling, but with a stabilized approach isn't too bad... Although I never tried it in a King Air! In a cirrus and 172 I had fun! Both were for salmon fishing trips wi my buddy.