Colby is one of the very few colleges that is even more in the middle of nowhere than Middlebury 
Bowdoin and Bates are inside small cities.
@User372623 You may want to look at Pitzer - not even close to a safety, but it does really check most of your boxes. Grinnell isn’t a safety but it has open curriculum and an excellent language program. It doesn’t click any of the rest of your boxes, though. It’s in the middle of rural Iowa.
Check out New College of Florida and Wake Forest.