2' × 10' rugs

Comfortable: '+ok.map(function(r){return r.label;}).join(', ')+'.
Full but workable: '+tight.map(function(r){return r.label;}).join(', ')+'. A rug packs denser than clothes, so treat these as the limit rather than the target.
Will not fit: '+no.map(function(r){return r.label;}).join(', ')+'. These need a commercial machine at a laundrette, or cleaning flat on a hard floor.

A full hallway or a long galley kitchen. 20 square feet, 9 options.