I found a couple of interesting passages in my Abaddon's Gate notes:
The Rocinante was shaped like a stubby black wedge of metal; a fat chisel laid on its side. The flat surface of the hull was occasionally broken up by a domed projection. [I guess that design didn't play well on TV?]
When the orbits were right, the journey from Luna to Mars could take as little as twelve days. The trek from Saturn to Ceres, a few months. [So Ceres orbits at 2.8AU, Saturn at 9.5AU. Uranus is another 9.5AU out and the ring gate beyond that. The TV show doesn't give you much of a sense of the time or accelleration/deceleration hardships of navigating the solar system.]
It (Nauvoo) was so big, so extravagant. It was like a rebellious shout at the emptiness of space. The universe is too big for our ship to move through it in a reasonable time? Fine, we’ll stuff all the bits of the universe we need inside of our ship and then go at our own pace. The inner walls of the rotating drum curved up in the distance, Coriolis effect masquerading as mass, metal ribbing and plates pretending to be substrate, just waiting for soil and plants and farm animals. Through the center of the drum, half a kilometer over Anna’s head, a narrow thread of bright yellow light shone down on them all. [So radius half a km and somewhere the length is mentioned as 2+ km. No soil yet, and I didn't find the intended "gravity" but I thought it was supposed to be near 1g so the settlers' bodies wouldn't be severely weakened by 100 years in low-g.]