Tempo by Hilton is offering rooms divided into three zones, including “an enveloping sleep environment” with a Sealy Accelerate temperature-controlled mattress and sound-absorbing acoustics; lights that dim at sunset; and, in some rooms, Peloton bikes, for people who consider exercise their Ambien.

At the Conrad Bali, guests can book a private 60-minute SWAY session in the spa (starting at 1,500,000 rupiahs, or about $95), which entails lying in a swinging, aerial, swaddled hammock that looks a lot like an actual cocoon. The rocking is meant to mimic floating on a cloud or being in the womb.

At the Beaumont in London, travelers can stay in perhaps the cocooniest room of them all, called, simply, ROOM (£1,402 per night, or about $1,780), a 745-square-foot suite inside a three-story stainless steel sculpture of a crouching man at the hotel entrance. It lacks a TV, a phone, even wall art. The goal of the British sculptor Antony Gormley, who designed ROOM, is for guests “to achieve a meditative stillness, to lose a sense of one’s body in the darkness and to allow the mind to expand.”

You are getting very sleepy

This month, to coincide with the N.S.F.’s Sleep Awareness Week (March 10 to 16), the Mandarin Oriental will begin a partnership with the hypnotherapist Malminder Gill, a.k.a. the Sleep Concierge, at the Hyde Park property in London. (After Hyde Park, the service will be available at the Mandarin Oriental in Mayfair, which opens this spring, followed by pop-ups across Europe, New York and other destinations later this year.) Starting at £500, guests can see Ms. Gill in the spa for a sleep consultation and session tailored to their particular sleep issues, with Ms. Gill even recommending optimal mealtimes and food-ingestion order. There will also be an option for a private bedside session, during which, if all goes well, guests drift off for the night.

“I tiptoe out,” said Ms. Gill. “I know that sounds really bizarre.”

The Royal Sonesta Benjamin New York has a similar program, called Rest & Renew, run by Rebecca Robbins, co-author of “Sleep for Success! Everything You Must Know About Sleep but Are Too Tired to Ask.”