I stayed at a Red Roof a few weeks ago for the first time in years due to a confluence of events that jacked up MKE hotel prices.
As my cousin and I were checking out, he remarked "now I remember why i don't stay at Red Roof Inns any more..."
That being said, I thought the room itself once you got inside the door was acceptable for a one-nighter. The bed wasn't any worse than a Candlewood, for example. But the exterior hallways and the stairs, I'm just too old for that stuff unless there's a really compelling reason.