We stayed in 603 and got to check out 601 before the occupants got there since we boarded early.
603 has about 18 inches in width more than a standard cabin. 601 is usually laid out, there is a support pole and a room divider so the bedroom is separate. I would totally book it. The only caveat is that if you drop anchor, you will hear it quite loudly, and very early, but on a 10 day cruise, it won't be every day.
