what were beds like for poor people in the Victorian times?

Hello. I am writing a novel set in the 1890's, in East End London. I want one of the characters and her child to move in with another family ( a poor family) so I need to find out about bedding and the mattresses. What were they made of? Also would the children in the East end family be expected to give up their bed for the new arrival or would the guests stay somewhere else?
Also I want one of the kids to have an embroidered cover over his bed, made by his mother. What kind of thread would she have used - is it authentic to use embroidery silks amoungst such poverty?

They would probably sleep on a straw-filled pallias

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