If someone has a spare room in their house, or a whole apartment they are not using, they may rent it to travelers on a daily, weekly, or monthly basis. (expertvagabond.com)
Don't have a spare room for your pantry needs? (diywell.com)
If you like the idea of having a spare room for guests, a sofa bed in the living room might be a good alternative. (housesimple.com)