Want to get away from it all, but not have to get that far away? I found a crazy cool treehouse that's hidden away in rural Nauvoo that is as off-the-grid as you can get.
There's nothing quite like falling asleep when you have the Mississippi River nearby. If that's also on your list of "things you'd like to experience on a getaway", I found a place in Hamilton, Illinois that offers that and also an orchard view.
I don't know about you, but when I think of I-70, I don't think of relaxing. However, there is one tiny house cabin that's hidden in a cove just off the interstate that does appear to offer a lot of relaxation options.