We stayed just below that suite on the Sun. Can't comment on that exact room lay-out, but will comment on the being on the bow. We did experience a fair bit of motion when not in the inside passage. I see that the Sun will be on the Seattle run this time around, stopping in Prince Rupert. You may be exposed to a fair bit of motion, particularly on the return trip, being on the outside of Vancouver Island.
I awoke the first day and thought I had a bug. Once on deck I saw the rollers in the swimming pool and realized why I felt this way. A couple hours on deck and I was fine. We were probably only exposed to open ocean for 6 hours or so. Being just above where we were, do expect some motion, and take precautions.