Originally Posted by jackal

Upside: it's larger than a roomette.

Downsides: it's downstairs, which means less of a view and a climb up the stairs every time you want to visit the lounge or diner. Also, while you get a window off both sides of the train, the windows themselves are smaller than the normal windows upstairs.

Really, on that majestic route, there's no reason to spend much time anywhere other than in the Sightseer Lounge car, so I'd suggest forgoing a room altogether and planning on spending most of the trip between Reno and Roseville in front of those panoramic picture windows.