> It's basically enough room for a small bed, dresser or wardrobe/chest for clothes, and maybe a (barely) partitioned toilet and shower.

Yep, that's what you get exactly. I mean, the space is only the size of 4 queen size beds edge to edge. Typically people in those quarters sleep on futons and fold them up during the day to make more room. The real killer is that cooking in these is tough, because your "kitchen" is 2x2 or smaller with a tiny sink next to a 1 or 2 hob (small ones) electric stove over a dorm-style mini fridge. If you like making real meals and not getting everything from Picard, you have to get very creative.