Prim (adjective) – very neat in appearance
https://www.merriam-webster.com/dictionary/prim
“That night riotous and colorful dreams invaded Helga Crane’s prim hotel bed. She woke in the morning weary and a bit shocked at the uncontrolled fancies which had visited her.” (pg 133)
Understanding this word helps visualize the hotel bed that Helga Crane slept on.