I found a great transit hotel at Kunming Airport.

Hotel name: Minyoun Lichen Hotel (Kunming Changshui International Airport) Location: About 10 minutes' drive from the airport Services: Airport transfers are prompt, with little to no waiting time. Shuttles run approximately every 30 minutes. Smart home features throughout Clean and hygienic 24-hour free airport transfer The bed provides excellent support—soft, but not too soft. The sink, toilet, and shower are all separate. Excellent! Overall: Highly recommended. Much better than spending the night at the airport. Very quiet. I especially liked the comfortable bed. The bathroom has a separate shower and toilet, and a smart toilet. I had an upset stomach and ordered some medicine, which was delivered to my door by a robot.