The ship's 63 deluxe cabins were a comfortable-enough 154 square ft., and divided into four categories (A-D), with category A cabins located on the upper deck, category B cabins located mid-ship on the middle deck; all have large picture windows. Categories C and D cabins are identical in size to A and B, and are located in the forward section of the middle deck, under the observation lounge, which might be a bit noisy if you retire early or like to sleep in (plus their windows are smaller and they don't open). There are also 12 standard cabins (category E) on the lower deck, which are quite a bit smaller at 120 square ft. These also have a Pullman bed, much smaller windows and are often below land because of the height of the canal. If your budget permits, I would opt for a category A or B cabin.
There's surprisingly ample storage space in the deluxe cabins, along with satellite TV, telephone, hairdryer, in-room safe and individual climate control. The bathroom has a full-size sink, standup European-style shower and ample storage in the toiletries cabinet. The beds can be made up as either a queen or two twins (except for category E) and are covered with German duvet style bedding. There's also a nice desk area, but no seating area. The ship's electricity is 220 voltage with the round outlets commonly found in continental Europe, however, there is a razor outlet in the bathroom which can be used with 115 voltage personal appliances.