We sailed Seadream for our "babymoon" (I hate that term actually). At almost 7 months pregnant, we did not do many rigorous activities at the ports of call.
Our room (standard window) was furnished cleverly, with many shelves to put things on, and felt large enough. The lavatory was large enough for us, but I could see someone who is not petite being in tight quarters.
Food was great. Service was fabulous. I met a woman on board who loved having fresh coconut juice, so the kitchen made sure to stock up in the ports and served the coconut right up!