This image shows a typical rural motel design from the mid-20th century in Iowa. These cabins are no longer separate or semidetached, but are subdivisions of a single long building.
The description states:
COLO CABIN CAMP
At the junction of U.S. Highways 65 and 30. A Standard Service Station with 24 hour service and a good place to eat, where friends meet.
— All that remains of the location noted for this establishment is a cemetery next to the highway.
The vehicle partially hidden behind the sign indicates this card likely dates from the 1950s.