http://www.desmoinesregister.com/sto...1982/86086618/

The body of Lee Rotatori was found in Room 106 at the Best Western Frontier Motor Lodge in Council Bluffs on the afternoon of Friday, June 25, 1982. She was found wearing pajamas and lying on her back in a pool of blood on the bed. She had been stabbed once in the heart... Police found no signs of forced entry or any kind of struggle...

Rotatori had lived at the motel for about a week while in training for her new job...

On Thursday, June 24, Rotatori had spent a few hours boating with other employees from the hospital. That gathering broke up at dusk and Rotatori stopped at McDonald’s to pick up food... [S]he’d made a purchase for only one person and she was not seen by any motel personnel as she entered her ground-floor room.
The article refers to another motel murder - Linda Mayfield, stabbed at the Starlite in April 1982. Still unsolved and unknown if related, but there is a suspect description.

Lee also had a husband back in Michigan who was supposed to relocate with her for this new job.