Outdoor loo usually. If you're in the middle of nowhere then there's prob no sewer line. Nowdays most rural places have septic tanks and indoor plumbing but this chump specified the entire return to tradition and pastoral idyl so we can assume an old style privy built outdoors.

Honestly though it really would be prob one of the smaller hardships. He could for instance be a shepard which means spending about a month living in a freezing one roomed shack on the side of a hill so that in lambing season he's on hand to help out with births at any time of day or night.