I don't have a bed in my bedroom. I have a Brazilian hammock. I also have a set of light block curtains that know how to do their job, and my computer w/ a decent set of speakers.
I had someone over at my house recently who needed a nap, and I set them up in my room. Closed the curtains, set them up in my hammock, and turned on Napsounds for them.
Later, they proclaimed that it was the best sleep they'd had in their whole life.