We did a 35 night cruise in 2019 in an inside cabin on the old Sea Princess, and those inside cabins were much smaller than on the newer ships. We really only used our cabin to sleep, shower, and change clothes. There are plenty of spaces around the ship to sit and relax. Go exploring during the first couple of days and hopefully you'll find the perfect place. Although we tended to move around a bit - coffee in one place, quiet reading in another, outside for a bit of fresh air (weather permitting), and so on.